The patch titled
drivers/rtc: correct error-handling code
has been added to the -mm tree. Its filename is
drivers-rtc-correct-error-handling-code.patch
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------------------------------------------------------
Subject: drivers/rtc: correct error-handling code
From: Julia Lawall <julia@xxxxxxx>
This code is not executed before ds1307->rtc has been successfully
initialized to the result of calling rtc_device_register. Thus the test
that ds1307->rtc is not NULL is always true.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@match exists@
expression x, E;
statement S1, S2;
@@
x = rtc_device_register(...)
... when != x = E
(
* if (x == NULL || ...) S1 else S2
|
* if (x == NULL && ...) S1 else S2
)
// </smpl>
Signed-off-by: Julia Lawall <julia@xxxxxxx>
Acked-by: Wolfram Sang <w.sang@xxxxxxxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-ds1307.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff -puN drivers/rtc/rtc-ds1307.c~drivers-rtc-correct-error-handling-code drivers/rtc/rtc-ds1307.c
--- a/drivers/rtc/rtc-ds1307.c~drivers-rtc-correct-error-handling-code
+++ a/drivers/rtc/rtc-ds1307.c
@@ -896,8 +896,7 @@ read_rtc:
return 0;
exit_irq:
- if (ds1307->rtc)
- rtc_device_unregister(ds1307->rtc);
+ rtc_device_unregister(ds1307->rtc);
exit_free:
kfree(ds1307);
return err;
_
Patches currently in -mm which might be from julia@xxxxxxx are
linux-next.patch
drivers-media-dvb-use-dst_type-field-instead-of-type_flags.patch
drivers-ata-use-resource_size.patch
drivers-rtc-correct-error-handling-code.patch
drivers-video-imxfbc-fix-resource-size-off-by-1-error.patch
edac-fix-resource-size-calculation.patch
fs-romfs-correct-error-handling-code.patch
drivers-vlynq-vlynqc-fix-resource-size-off-by-1-error.patch
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