From: Fengguang Wu <fengguang.wu@xxxxxxxxx>
drivers/usb/host/ehci-mv.c:181:26-27: WARNING comparing pointer to 0, suggest !E
/c/kernel-tests/src/cocci/drivers/usb/host/ehci-mv.c:181:26-27: WARNING comparing pointer to 0
Compare pointer-typed values to NULL rather than 0
Semantic patch information:
This makes an effort to choose between !x and x == NULL. !x is used
if it has previously been used with the function used to initialize x.
This relies on type information. More type information can be obtained
using the option -all_includes and the option -I to specify an
include path.
Generated by: coccinelle/null/badzero.cocci
CC: Jingoo Han <jg1.han@xxxxxxxxxxx>
CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
drivers/usb/host/ehci-mv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c
index 417c10d..6e8afca 100644
--- a/drivers/usb/host/ehci-mv.c
+++ b/drivers/usb/host/ehci-mv.c
@@ -178,7 +178,7 @@ static int mv_ehci_probe(struct platform_device *pdev)
ehci_mv->phy_regs = devm_ioremap(&pdev->dev, r->start,
resource_size(r));
- if (ehci_mv->phy_regs == 0) {
+ if (!ehci_mv->phy_regs) {
dev_err(&pdev->dev, "failed to map phy I/O memory\n");
retval = -EFAULT;
goto err_put_hcd;
--
1.8.4
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