| commit | 867696d037e997ffa0b07ed84cb825e0479dcf7e | |
| author | Dan Carpenter <dan.carpenter@oracle.com> | |
| Tue, 28 Jan 2014 00:19:36 +0000 (28 03:19 +0300) | ||
| committer | Dan Carpenter <dan.carpenter@oracle.com> | |
| Tue, 28 Jan 2014 00:19:36 +0000 (28 03:19 +0300) | ||
| tree | 2f1e8b0d8cb26573628cde35a473daedf200b065 | treesnapshot (tar.gz zip) |
| parent | a05392caf5ea7444aa1d43b6d6a140a08fad4079 | commitdiff |
*new* readl_infinite_loops: check for hotplug bugs which could cause hangs
I've a device is pulled then readl() returns ((uint)-1). A lot of code
doesn't check for that and does:
while (readl() & 0x80)
;
If the device has been pulled then that will loop forever. Thanks to
Joe Lawrence, for suggesting this.
Reported-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
I've a device is pulled then readl() returns ((uint)-1). A lot of code
doesn't check for that and does:
while (readl() & 0x80)
;
If the device has been pulled then that will loop forever. Thanks to
Joe Lawrence, for suggesting this.
Reported-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| check_list.h | diffblobblamehistory | |
| check_readl_infinite_loops.c | [new file with mode: 0644] | blob |