Commit 9db29258 authored by Stephen Rothwell's avatar Stephen Rothwell Committed by Linus Torvalds
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[PATCH] ppc64 iSeries: make virtual DVD-RAMs writable again



It appears that another test has been added in the Uniform CDROM layer that
must be passed before a DVD-RAM is considered writeable.  This patch
implements an emulation of the needed packet command for the viocd driver.
Signed-off-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 9ae250d1
......@@ -488,6 +488,20 @@ static int viocd_packet(struct cdrom_device_info *cdi,
& (CDC_DVD_RAM | CDC_RAM)) != 0;
}
break;
case GPCMD_GET_CONFIGURATION:
if (cgc->cmd[3] == CDF_RWRT) {
struct rwrt_feature_desc *rfd = (struct rwrt_feature_desc *)(cgc->buffer + sizeof(struct feature_header));
if ((buflen >=
(sizeof(struct feature_header) + sizeof(*rfd))) &&
(cdi->ops->capability & ~cdi->mask
& (CDC_DVD_RAM | CDC_RAM))) {
rfd->feature_code = cpu_to_be16(CDF_RWRT);
rfd->curr = 1;
ret = 0;
}
}
break;
default:
if (cgc->sense) {
/* indicate Unknown code */
......
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