| Message ID | 20230404101842.1382986-6-o.rempel@pengutronix.de (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | ec2312f337356cd48f538c49f7cf1c2047ec1866 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: dsa: microchip: ksz8: Enhance static MAC table operations and error handling | expand |
| Context | Check | Description |
|---|---|---|
| netdev/series_format | success | Posting correctly formatted |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/fixes_present | success | Fixes tag not required for -next series |
| netdev/header_inline | success | No static functions without inline keyword in header files |
| netdev/build_32bit | success | Errors and warnings before: 18 this patch: 18 |
| netdev/cc_maintainers | success | CCed 10 of 10 maintainers |
| netdev/build_clang | success | Errors and warnings before: 18 this patch: 18 |
| netdev/verify_signedoff | success | Signed-off-by tag matches author and committer |
| netdev/deprecated_api | success | None detected |
| netdev/check_selftest | success | No net selftest shell script |
| netdev/verify_fixes | success | No Fixes tag |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 18 this patch: 18 |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 45 lines checked |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/source_inline | success | Was 0 now: 0 |
Hi Oleksij, On Tue, 2023-04-04 at 12:18 +0200, Oleksij Rempel wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you > know the content is safe > > Take advantage of the return values provided by read/write functions > in > ksz8_r_sta_mac_table() to handle cases where read/write operations > may > fail. > > Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index 4dcf68a7f6c0..76a8ca329732 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -336,19 +336,26 @@ void ksz8_port_init_cnt(struct ksz_device *dev, int port) } } -static void ksz8_r_table(struct ksz_device *dev, int table, u16 addr, u64 *data) +static int ksz8_r_table(struct ksz_device *dev, int table, u16 addr, u64 *data) { const u16 *regs; u16 ctrl_addr; + int ret; regs = dev->info->regs; ctrl_addr = IND_ACC_TABLE(table | TABLE_READ) | addr; mutex_lock(&dev->alu_mutex); - ksz_write16(dev, regs[REG_IND_CTRL_0], ctrl_addr); - ksz_read64(dev, regs[REG_IND_DATA_HI], data); + ret = ksz_write16(dev, regs[REG_IND_CTRL_0], ctrl_addr); + if (ret) + goto unlock_alu; + + ret = ksz_read64(dev, regs[REG_IND_DATA_HI], data); +unlock_alu: mutex_unlock(&dev->alu_mutex); + + return ret; } static void ksz8_w_table(struct ksz_device *dev, int table, u16 addr, u64 data) @@ -464,11 +471,15 @@ static int ksz8_r_sta_mac_table(struct ksz_device *dev, u16 addr, const u8 *shifts; const u32 *masks; u64 data; + int ret; shifts = dev->info->shifts; masks = dev->info->masks; - ksz8_r_table(dev, TABLE_STATIC_MAC, addr, &data); + ret = ksz8_r_table(dev, TABLE_STATIC_MAC, addr, &data); + if (ret) + return ret; + data_hi = data >> 32; data_lo = (u32)data;
Take advantage of the return values provided by read/write functions in ksz8_r_sta_mac_table() to handle cases where read/write operations may fail. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- drivers/net/dsa/microchip/ksz8795.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-)