diff mbox series

ptp: ixp46x: Fix error handling in ptp_ixp_probe()

Message ID 20211125075432.26636-1-tangbin@cmss.chinamobile.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series ptp: ixp46x: Fix error handling in ptp_ixp_probe() | expand

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Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/cover_letter success Single patches do not need cover letters
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers fail 2 blamed authors not CCed: arnd@arndb.de linus.walleij@linaro.org; 2 maintainers not CCed: arnd@arndb.de linus.walleij@linaro.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Tang Bin Nov. 25, 2021, 7:54 a.m. UTC 
In the function ptp_ixp_probe(), when get irq failed
after executing platform_get_irq(), the negative value
returned will not be detected here. So fix error handling
in this place.

Fixes: 9055a2f591629 ("ixp4xx_eth: make ptp support a platform driver")
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
---
 drivers/net/ethernet/xscale/ptp_ixp46x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jakub Kicinski Nov. 25, 2021, 5:48 p.m. UTC | #1 
On Thu, 25 Nov 2021 15:54:32 +0800 Tang Bin wrote:
> In the function ptp_ixp_probe(), when get irq failed
> after executing platform_get_irq(), the negative value
> returned will not be detected here. So fix error handling
> in this place.
> 
> Fixes: 9055a2f591629 ("ixp4xx_eth: make ptp support a platform driver")
> Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>

Please resend this and CC the right people.

./scripts/get_maintainer.pl
diff mbox series

Patch

diff --git a/drivers/net/ethernet/xscale/ptp_ixp46x.c b/drivers/net/ethernet/xscale/ptp_ixp46x.c
index 39234852e01b..c52e01d89e47 100644
--- a/drivers/net/ethernet/xscale/ptp_ixp46x.c
+++ b/drivers/net/ethernet/xscale/ptp_ixp46x.c
@@ -272,7 +272,7 @@  static int ptp_ixp_probe(struct platform_device *pdev)
 	ixp_clock.master_irq = platform_get_irq(pdev, 0);
 	ixp_clock.slave_irq = platform_get_irq(pdev, 1);
 	if (IS_ERR(ixp_clock.regs) ||
-	    !ixp_clock.master_irq || !ixp_clock.slave_irq)
+	    (ixp_clock.master_irq < 0) || (ixp_clock.slave_irq < 0))
 		return -ENXIO;
 
 	ixp_clock.caps = ptp_ixp_caps;