[linux-next:master 11519/13394] drivers/net/ethernet/renesas/ravb_main.c:2086:6: warning: variable 'priv' is used uninitialized whenever 'if' condition is true

[kernel test robot]

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 18250b538735142307082e4e99e3ae5c12d44013
commit: 8ef7adc6beb2ef0bce83513dc9e4505e7b21e8c2 [11519/13394] net: ethernet: ravb: Enable optional refclk
config: riscv-randconfig-r031-20210416 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 6a18cc23efad410db48a3ccfc233d215de7d4cb9)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=8ef7adc6beb2ef0bce83513dc9e4505e7b21e8c2
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 8ef7adc6beb2ef0bce83513dc9e4505e7b21e8c2
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/renesas/ravb_main.c:2086:6: warning: variable 'priv' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (irq < 0) {
^~~~~~~
drivers/net/ethernet/renesas/ravb_main.c:2254:24: note: uninitialized use occurs here
clk_disable_unprepare(priv->refclk);
^~~~
drivers/net/ethernet/renesas/ravb_main.c:2086:2: note: remove the 'if' if its condition is always false
if (irq < 0) {
^~~~~~~~~~~~~~
drivers/net/ethernet/renesas/ravb_main.c:2046:27: note: initialize the variable 'priv' to silence this warning
struct ravb_private *priv;
^
= NULL
1 warning generated.


vim +2086 drivers/net/ethernet/renesas/ravb_main.c

61fccb2d6274f7 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2017-01-27 2042
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2043 static int ravb_probe(struct platform_device *pdev)
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2044 {
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2045 struct device_node *np = pdev->dev.of_node;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2046 struct ravb_private *priv;
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2047 enum ravb_chip_id chip_id;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2048 struct net_device *ndev;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2049 int error, irq, q;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2050 struct resource *res;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2051 int i;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2052
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2053 if (!np) {
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2054 dev_err(&pdev->dev,
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2055 "this driver is required to be instantiated from device tree\n");
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2056 return -EINVAL;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2057 }
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2058
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2059 /* Get base address */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2060 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2061 if (!res) {
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2062 dev_err(&pdev->dev, "invalid resource\n");
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2063 return -EINVAL;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2064 }
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2065
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2066 ndev = alloc_etherdev_mqs(sizeof(struct ravb_private),
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2067 NUM_TX_QUEUE, NUM_RX_QUEUE);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2068 if (!ndev)
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2069 return -ENOMEM;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2070
4d86d381862714 drivers/net/ethernet/renesas/ravb_main.c Simon Horman 2017-10-04 2071 ndev->features = NETIF_F_RXCSUM;
4d86d381862714 drivers/net/ethernet/renesas/ravb_main.c Simon Horman 2017-10-04 2072 ndev->hw_features = NETIF_F_RXCSUM;
4d86d381862714 drivers/net/ethernet/renesas/ravb_main.c Simon Horman 2017-10-04 2073
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2074 pm_runtime_enable(&pdev->dev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2075 pm_runtime_get_sync(&pdev->dev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2076
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2077 /* The Ether-specific entries in the device structure. */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2078 ndev->base_addr = res->start;
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2079
e866863066a4e6 drivers/net/ethernet/renesas/ravb_main.c Wolfram Sang 2016-03-01 2080 chip_id = (enum ravb_chip_id)of_device_get_match_data(&pdev->dev);
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2081
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2082 if (chip_id == RCAR_GEN3)
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2083 irq = platform_get_irq_byname(pdev, "ch22");
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2084 else
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2085 irq = platform_get_irq(pdev, 0);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 @2086 if (irq < 0) {
f375339e497582 drivers/net/ethernet/renesas/ravb_main.c Sergei Shtylyov 2015-08-28 2087 error = irq;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2088 goto out_release;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2089 }
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2090 ndev->irq = irq;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2091
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2092 SET_NETDEV_DEV(ndev, &pdev->dev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2093
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2094 priv = netdev_priv(ndev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2095 priv->ndev = ndev;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2096 priv->pdev = pdev;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2097 priv->num_tx_ring[RAVB_BE] = BE_TX_RING_SIZE;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2098 priv->num_rx_ring[RAVB_BE] = BE_RX_RING_SIZE;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2099 priv->num_tx_ring[RAVB_NC] = NC_TX_RING_SIZE;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2100 priv->num_rx_ring[RAVB_NC] = NC_RX_RING_SIZE;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2101 priv->addr = devm_ioremap_resource(&pdev->dev, res);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2102 if (IS_ERR(priv->addr)) {
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2103 error = PTR_ERR(priv->addr);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2104 goto out_release;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2105 }
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2106
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2107 spin_lock_init(&priv->lock);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2108 INIT_WORK(&priv->work, ravb_tx_timeout_work);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2109
0c65b2b90d13c1 drivers/net/ethernet/renesas/ravb_main.c Andrew Lunn 2019-11-04 2110 error = of_get_phy_mode(np, &priv->phy_interface);
0c65b2b90d13c1 drivers/net/ethernet/renesas/ravb_main.c Andrew Lunn 2019-11-04 2111 if (error && error != -ENODEV)
0c65b2b90d13c1 drivers/net/ethernet/renesas/ravb_main.c Andrew Lunn 2019-11-04 2112 goto out_release;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2113
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2114 priv->no_avb_link = of_property_read_bool(np, "renesas,no-ether-link");
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2115 priv->avb_link_active_low =
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2116 of_property_read_bool(np, "renesas,ether-link-active-low");
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2117
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2118 if (chip_id == RCAR_GEN3) {
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2119 irq = platform_get_irq_byname(pdev, "ch24");
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2120 if (irq < 0) {
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2121 error = irq;
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2122 goto out_release;
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2123 }
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2124 priv->emac_irq = irq;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2125 for (i = 0; i < NUM_RX_QUEUE; i++) {
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2126 irq = platform_get_irq_byname(pdev, ravb_rx_irqs[i]);
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2127 if (irq < 0) {
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2128 error = irq;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2129 goto out_release;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2130 }
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2131 priv->rx_irqs[i] = irq;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2132 }
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2133 for (i = 0; i < NUM_TX_QUEUE; i++) {
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2134 irq = platform_get_irq_byname(pdev, ravb_tx_irqs[i]);
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2135 if (irq < 0) {
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2136 error = irq;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2137 goto out_release;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2138 }
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2139 priv->tx_irqs[i] = irq;
f51bdc236b6c58 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2016-04-03 2140 }
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2141 }
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2142
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2143 priv->chip_id = chip_id;
22d4df8ff3a3cc drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2144
3e3d647715d401 drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2017-08-01 2145 priv->clk = devm_clk_get(&pdev->dev, NULL);
ab104615e01c2c drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2017-10-12 2146 if (IS_ERR(priv->clk)) {
ab104615e01c2c drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2017-10-12 2147 error = PTR_ERR(priv->clk);
ab104615e01c2c drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2017-10-12 2148 goto out_release;
ab104615e01c2c drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2017-10-12 2149 }
3e3d647715d401 drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2017-08-01 2150
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2151 priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk");
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2152 if (IS_ERR(priv->refclk)) {
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2153 error = PTR_ERR(priv->refclk);
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2154 goto out_release;
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2155 }
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2156 clk_prepare_enable(priv->refclk);
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2157
75efa06f457bbe drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2018-02-16 2158 ndev->max_mtu = 2048 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
75efa06f457bbe drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2018-02-16 2159 ndev->min_mtu = ETH_MIN_MTU;
75efa06f457bbe drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2018-02-16 2160
f543305da9b5a5 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2018-09-19 2161 priv->num_tx_desc = chip_id == RCAR_GEN2 ?
f543305da9b5a5 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2018-09-19 2162 NUM_TX_DESC_GEN2 : NUM_TX_DESC_GEN3;
f543305da9b5a5 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2018-09-19 2163
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2164 /* Set function */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2165 ndev->netdev_ops = &ravb_netdev_ops;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2166 ndev->ethtool_ops = &ravb_ethtool_ops;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2167
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2168 /* Set AVB config mode */
0184165b2f42c4 drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2016-08-03 2169 ravb_set_config_mode(ndev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2170
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2171 /* Set GTI value */
b3d39a8805c510 drivers/net/ethernet/renesas/ravb_main.c Simon Horman 2015-11-20 2172 error = ravb_set_gti(ndev);
b3d39a8805c510 drivers/net/ethernet/renesas/ravb_main.c Simon Horman 2015-11-20 2173 if (error)
b3d39a8805c510 drivers/net/ethernet/renesas/ravb_main.c Simon Horman 2015-11-20 2174 goto out_release;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2175
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2176 /* Request GTI loading */
568b3ce7a8efdc drivers/net/ethernet/renesas/ravb_main.c Sergei Shtylyov 2016-02-10 2177 ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2178
ce19a9eb53be2f drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-10-01 2179 if (priv->chip_id != RCAR_GEN2) {
a6f51f2efa742d drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-10-01 2180 ravb_parse_delay_mode(np, ndev);
61fccb2d6274f7 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2017-01-27 2181 ravb_set_delay_mode(ndev);
ce19a9eb53be2f drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-10-01 2182 }
61fccb2d6274f7 drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2017-01-27 2183
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2184 /* Allocate descriptor base address table */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2185 priv->desc_bat_size = sizeof(struct ravb_desc) * DBAT_ENTRY_NUM;
e2dbb33ad9545d drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2186 priv->desc_bat = dma_alloc_coherent(ndev->dev.parent, priv->desc_bat_size,
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2187 &priv->desc_bat_dma, GFP_KERNEL);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2188 if (!priv->desc_bat) {
c451113291c193 drivers/net/ethernet/renesas/ravb_main.c Simon Horman 2015-11-02 2189 dev_err(&pdev->dev,
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2190 "Cannot allocate desc base address table (size %d bytes)\n",
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2191 priv->desc_bat_size);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2192 error = -ENOMEM;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2193 goto out_release;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2194 }
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2195 for (q = RAVB_BE; q < DBAT_ENTRY_NUM; q++)
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2196 priv->desc_bat[q].die_dt = DT_EOS;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2197 ravb_write(ndev, priv->desc_bat_dma, DBAT);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2198
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2199 /* Initialise HW timestamp list */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2200 INIT_LIST_HEAD(&priv->ts_skb_list);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2201
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2202 /* Initialise PTP Clock driver */
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2203 if (chip_id != RCAR_GEN2)
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2204 ravb_ptp_init(ndev, pdev);
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2205
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2206 /* Debug message level */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2207 priv->msg_enable = RAVB_DEF_MSG_ENABLE;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2208
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2209 /* Read and set MAC address */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2210 ravb_read_mac_address(ndev, of_get_mac_address(np));
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2211 if (!is_valid_ether_addr(ndev->dev_addr)) {
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2212 dev_warn(&pdev->dev,
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2213 "no valid MAC address supplied, using a random one\n");
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2214 eth_hw_addr_random(ndev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2215 }
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2216
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2217 /* MDIO bus init */
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2218 error = ravb_mdio_init(priv);
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2219 if (error) {
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2220 dev_err(&pdev->dev, "failed to initialize MDIO\n");
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2221 goto out_dma_free;
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2222 }
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2223
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2224 netif_napi_add(ndev, &priv->napi[RAVB_BE], ravb_poll, 64);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2225 netif_napi_add(ndev, &priv->napi[RAVB_NC], ravb_poll, 64);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2226
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2227 /* Network device register */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2228 error = register_netdev(ndev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2229 if (error)
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2230 goto out_napi_del;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2231
3e3d647715d401 drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2017-08-01 2232 device_set_wakeup_capable(&pdev->dev, 1);
3e3d647715d401 drivers/net/ethernet/renesas/ravb_main.c Niklas Söderlund 2017-08-01 2233
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2234 /* Print device information */
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2235 netdev_info(ndev, "Base address at %#x, %pM, IRQ %d.\n",
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2236 (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2237
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2238 platform_set_drvdata(pdev, ndev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2239
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2240 return 0;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2241
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2242 out_napi_del:
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2243 netif_napi_del(&priv->napi[RAVB_NC]);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2244 netif_napi_del(&priv->napi[RAVB_BE]);
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2245 ravb_mdio_release(priv);
77972b55fb9d35 drivers/net/ethernet/renesas/ravb_main.c Geert Uytterhoeven 2020-09-22 2246 out_dma_free:
e2dbb33ad9545d drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-09-30 2247 dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat,
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2248 priv->desc_bat_dma);
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2249
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2250 /* Stop PTP Clock driver */
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2251 if (chip_id != RCAR_GEN2)
f5d7837f96e53a drivers/net/ethernet/renesas/ravb_main.c Kazuya Mizuguchi 2015-12-02 2252 ravb_ptp_stop(ndev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2253 out_release:
8ef7adc6beb2ef drivers/net/ethernet/renesas/ravb_main.c Adam Ford 2021-04-12 2254 clk_disable_unprepare(priv->refclk);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2255 free_netdev(ndev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2256
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2257 pm_runtime_put(&pdev->dev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2258 pm_runtime_disable(&pdev->dev);
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2259 return error;
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2260 }
c156633f135326 drivers/net/ethernet/renesas/ravb.c Sergei Shtylyov 2015-06-11 2261

:::::: The code at line 2086 was first introduced by commit
:::::: c156633f1353264634135dea86ffcae74f2122fc Renesas Ethernet AVB driver proper

:::::: TO: Sergei Shtylyov <sergei....@cogentembedded.com>
:::::: CC: David S. Miller <da...@davemloft.net>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuil...@lists.01.org

[kernel test robot]

Hi Adam,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 593ef1658ecf61d3619885bdbbcfffa3d1417891
commit: 8ef7adc6beb2ef0bce83513dc9e4505e7b21e8c2 [11414/14048] net: ethernet: ravb: Enable optional refclk
config: mips-randconfig-r031-20210421 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d87b9b81ccb95217181ce75515c6c68bbb408ca4)

reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross

# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu

# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=8ef7adc6beb2ef0bce83513dc9e4505e7b21e8c2
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 8ef7adc6beb2ef0bce83513dc9e4505e7b21e8c2
# save the attached .config to linux build tree

COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=mips