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| author | Julia Lawall <Julia.Lawall@lip6.fr> | 2013-01-21 14:02:46 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-21 13:15:31 -0800 |
| commit | 5c6e9bf011bca072648017477b0fe36402be1415 (patch) | |
| tree | d185f3c6d26559d40600fc1e6cf711171cee26c6 /drivers/usb/chipidea | |
| parent | f4cc1834bdc47d0574ceffb728f256f67e1190ef (diff) | |
| download | kernel-common-5c6e9bf011bca072648017477b0fe36402be1415.tar.gz kernel-common-5c6e9bf011bca072648017477b0fe36402be1415.tar.bz2 kernel-common-5c6e9bf011bca072648017477b0fe36402be1415.zip | |
drivers/usb/chipidea/core.c: adjust duplicate test
Delete successive tests to the same location. In this case res has already
been tested for being NULL, and calling devm_request_and_ioremap will not
make it NULL. On the other hand, devm_request_and_ioremap can return NULL
on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@s exists@
local idexpression y;
expression x,e;
@@
*if ( \(x == NULL\|IS_ERR(x)\|y != 0\) )
{ ... when forall
return ...; }
... when != \(y = e\|y += e\|y -= e\|y |= e\|y &= e\|y++\|y--\|&y\)
when != \(XT_GETPAGE(...,y)\|WMI_CMD_BUF(...)\)
*if ( \(x == NULL\|IS_ERR(x)\|y != 0\) )
{ ... when forall
return ...; }
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index aebf695a9344..57cae1f897b2 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -411,7 +411,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) } base = devm_request_and_ioremap(dev, res); - if (!res) { + if (!base) { dev_err(dev, "can't request and ioremap resource\n"); return -ENOMEM; } |