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libata: Un-break ATA blacklist 

lib/glob.c provides a new glob_match() function, with arguments in
(pattern, string) order.  It replaced a private function with arguments
in (string, pattern) order, but I didn't swap the call site...

The result was the entire ATA blacklist was effectively disabled.

The lesson for today is "I f***ed up *how* badly *how* many months ago?",
er, I mean "Nobody Tests RC Kernels On Legacy Hardware".

This was not a subtle break, but it made it through an entire RC
cycle unreported, presumably because all the people doing testing
have full-featured hardware.

(FWIW, the reason for the argument swap was because fnmatch() does it that
way, and for a while implementing a full fnmatch() was being considered.)

Fixes: 428ac5fc05 (libata: Use glob_match from lib/glob.c)
Reported-by: Steven Honeyman <stevenhoneyman@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=71371#c21
Signed-off-by: George Spelvin <linux@horizon.com>
Cc: <stable@vger.kernel.org> # 3.17
Tested-by: Steven Honeyman <stevenhoneyman@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
George Spelvin 2014-10-07 07:26:38 -04:00 committed by Tejun Heo
parent 33fb0d01ce
commit 1c40279960
1 changed files with 2 additions and 2 deletions
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4
drivers/ata/libata-core.c
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@ -4261,10 +4261,10 @@ static unsigned long ata_dev_blacklisted(const struct ata_device *dev)
ata_id_c_string(dev->id, model_rev, ATA_ID_FW_REV, sizeof(model_rev));
while (ad->model_num) {
if (glob_match(model_num, ad->model_num)) {
if (glob_match(ad->model_num, model_num)) {
if (ad->model_rev == NULL)
return ad->horkage;
if (glob_match(model_rev, ad->model_rev))
if (glob_match(ad->model_rev, model_rev))
return ad->horkage;
}
ad++;