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authorAlexander Inyukhin <shurick@sectorb.msk.ru>2008-08-18 21:40:04 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-08-18 21:40:04 +0200
commitbce31b674846584f0a80c95b6c09f07c32b9b041 (patch)
tree71267e419702863709e7c2ca4b81ecf2570b31aa
parentd15cad5df1dac17ae33152646f599f0bdc6be48e (diff)
cdrom: handle TOC
This patch should fix TOC handling for cdroms that can not play audio. It extends commit af744e3294d09d706c4eae26cffaaa68a8d40337 ("cdrom: don't check CDC_PLAY_AUDIO in cdrom_count_tracks()") with a safety check and non-audio ioctls support. Since CDC_PLAY_AUDIO flag was used not only to check ability to play audio but also to ensure that audio_ioctl was not NULL, all TOC-related operations had to use it. As far as I understand, now audio_ioctl is never NULL, so a sanity check during device registration should be sufficient. It was tested on Optiarc AD7203A device, that has no ability to play audio. Cc: Tejun Heo <tj@kernel.org> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [bart: remove now unneeded ->audio_ioctl check (noticed by Borislav)] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-rw-r--r--drivers/cdrom/cdrom.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index d9d1b65d206c..74031de517e6 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -408,7 +408,6 @@ int register_cdrom(struct cdrom_device_info *cdi)
ENSURE(get_last_session, CDC_MULTI_SESSION);
ENSURE(get_mcn, CDC_MCN);
ENSURE(reset, CDC_RESET);
- ENSURE(audio_ioctl, CDC_PLAY_AUDIO);
ENSURE(generic_packet, CDC_GENERIC_PACKET);
cdi->mc_flags = 0;
cdo->n_minors = 0;
@@ -2506,8 +2505,6 @@ static int cdrom_ioctl_get_subchnl(struct cdrom_device_info *cdi,
/* cdinfo(CD_DO_IOCTL,"entering CDROMSUBCHNL\n");*/
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
if (copy_from_user(&q, argp, sizeof(q)))
return -EFAULT;
@@ -2538,8 +2535,6 @@ static int cdrom_ioctl_read_tochdr(struct cdrom_device_info *cdi,
/* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCHDR\n"); */
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
if (copy_from_user(&header, argp, sizeof(header)))
return -EFAULT;
@@ -2562,8 +2557,6 @@ static int cdrom_ioctl_read_tocentry(struct cdrom_device_info *cdi,
/* cdinfo(CD_DO_IOCTL, "entering CDROMREADTOCENTRY\n"); */
- if (!CDROM_CAN(CDC_PLAY_AUDIO))
- return -ENOSYS;
if (copy_from_user(&entry, argp, sizeof(entry)))
return -EFAULT;

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