From: Tom Rix trix@redhat.com
stable inclusion from stable-v5.10.110 commit 3b9fabe8f6e80b884e830d3cf715be81534e8845 bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit fa7b514d2b2894e052b8e94c7a29feb98e90093f upstream.
Clang static analysis reports this issue:
| mcp251xfd-core.c:1813:7: warning: The left operand | of '&' is a garbage value | FIELD_GET(MCP251XFD_REG_DEVID_ID_MASK, dev_id), | ^ ~~~~~~
dev_id is set in a successful call to mcp251xfd_register_get_dev_id(). Though the status of calls made by mcp251xfd_register_get_dev_id() are checked and handled, their status' are not returned. So return err.
Fixes: 55e5b97f003e ("can: mcp25xxfd: add driver for Microchip MCP25xxFD SPI CAN") Link: https://lore.kernel.org/all/20220319153128.2164120-1-trix@redhat.com Signed-off-by: Tom Rix trix@redhat.com Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yu Liao liaoyu15@huawei.com Reviewed-by: Wei Li liwei391@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c index abe00a085f6f..189d22658813 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c @@ -2578,7 +2578,7 @@ mcp251xfd_register_get_dev_id(const struct mcp251xfd_priv *priv, out_kfree_buf_rx: kfree(buf_rx);
- return 0; + return err; }
#define MCP251XFD_QUIRK_ACTIVE(quirk) \