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ALSA: trident: Suppress gcc string warning

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commit d6b340d7cb33c816ef4abe8143764ec5ab14a5cc upstream.

The meddlesome gcc warns about the possible shortname string in
trident driver code:
  sound/pci/trident/trident.c: In function ‘snd_trident_probe’:
  sound/pci/trident/trident.c:126:2: warning: ‘strcat’ accessing 17 or more bytes at offsets 36 and 20 may overlap 1 byte at offset 36 [-Wrestrict]
  strcat(card->shortname, card->driver);

It happens since gcc calculates the possible string size from
card->driver, but this can't be true since we did set the string just
before that, and they are much shorter.

For shutting it up, use the exactly same string set to card->driver
for strcat() to card->shortname, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai 2018-07-26 14:58:03 +02:00 committed by Greg Kroah-Hartman
parent 705a2810a3
commit 6bf8c9fc96
1 changed files with 1 additions and 1 deletions
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2
sound/pci/trident/trident.c
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@ -123,7 +123,7 @@ static int snd_trident_probe(struct pci_dev *pci,
} else {
strcpy(card->shortname, "Trident ");
}
strcat(card->shortname, card->driver);
strcat(card->shortname, str);
sprintf(card->longname, "%s PCI Audio at 0x%lx, irq %d",
card->shortname, trident->port, trident->irq);