From: David S. Miller Date: Tue, 23 Jun 2009 23:01:06 +0000 (-0700) Subject: ide-cd: Don't warn on bogus block size unless it actually matters. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=af054ed0018f0a69f8ea6f7546cbf34385edf13b;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git ide-cd: Don't warn on bogus block size unless it actually matters. Frans Pop reported that his CDROM drive reports a blocksize of 2352, and this causes new warnings due to commit e8e7b9eb11c34ee18bde8b7011af41938d1ad667 ("ide-cd: fix oops when using growisofs"). What we're trying to do is make sure that "blocklen >> SECTOR_BITS" is something the block layer won't choke on. And for Frans' case "2352 >> SECTOR_BITS" is equal to "2048 >> SECTOR_BITS", and thats "4". So warning in this case gives no real benefit. Reported-by: Frans Pop Tested-by: Frans Pop Signed-off-by: David S. Miller --- diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 4a19686fcfe9..a9a1bfb14e7c 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -876,9 +876,12 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, return stat; /* - * Sanity check the given block size + * Sanity check the given block size, in so far as making + * sure the sectors_per_frame we give to the caller won't + * end up being bogus. */ blocklen = be32_to_cpu(capbuf.blocklen); + blocklen = (blocklen >> SECTOR_BITS) << SECTOR_BITS; switch (blocklen) { case 512: case 1024: