On Wed, Jul 30, 2008 at 10:18 AM, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Wed, 30 Jul 2008 10:10:06 +0200 Petr Tesarik <ptesarik@xxxxxxx> wrote:
>
>> Resent because of a typo in the LKML address. :(
>
> Thanks.
>
>>
>> Aesthetic regards aside, commit e8e7b9eb11c34ee18bde8b7011af41938d1ad667
>> still leaves a bug in the error message, because it uses the unconverted
>> big-endian value for printk.
>>
>> Fix this by using a local variable in machine byte order. The result is
>> correct, more readable, and also produces slightly shorter code on i386.
>>
>> Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
>> Cc: Jan Kara <jack@xxxxxxx>
>> Signed-off-by: Petr Tesarik <ptesarik@xxxxxxx>
I definitely like this one better, thanks.
Acked-by: Borislav Petkov <petkovbb@xxxxxxxxx>
>
> Bart owns this patch now. It got lost for a month and it has already
> been fixed twice and it is also on the route to 2.6.25.x and 2.6.26.x,
> so it'll get complicated. Not a happy little patch.
Greg, can you please apply this one on top of -stable.
>
>>
>> ide-cd.c | 18 ++++++++++--------
>> 1 file changed, 10 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
>> --- a/drivers/ide/ide-cd.c
>> +++ b/drivers/ide/ide-cd.c
>> @@ -1305,6 +1305,7 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
>> int stat;
>> unsigned char cmd[BLK_MAX_CDB];
>> unsigned len = sizeof(capbuf);
>> + __u32 blocklen;
>>
>> memset(cmd, 0, BLK_MAX_CDB);
>> cmd[0] = GPCMD_READ_CDVD_CAPACITY;
>> @@ -1317,23 +1318,24 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
>> /*
>> * Sanity check the given block size
>> */
>> - switch (capbuf.blocklen) {
>> - case __constant_cpu_to_be32(512):
>> - case __constant_cpu_to_be32(1024):
>> - case __constant_cpu_to_be32(2048):
>> - case __constant_cpu_to_be32(4096):
>> + blocklen = be32_to_cpu(capbuf.blocklen);
>> + switch (blocklen) {
>> + case 512:
>> + case 1024:
>> + case 2048:
>> + case 4096:
>> break;
>> default:
>> printk(KERN_ERR "%s: weird block size %u\n",
>> - drive->name, capbuf.blocklen);
>> + drive->name, blocklen);
>> printk(KERN_ERR "%s: default to 2kb block size\n",
>> drive->name);
>> - capbuf.blocklen = __constant_cpu_to_be32(2048);
>> + blocklen = 2048;
>> break;
>> }
>>
>> *capacity = 1 + be32_to_cpu(capbuf.lba);
>> - *sectors_per_frame = be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
>> + *sectors_per_frame = blocklen >> SECTOR_BITS;
>> return 0;
>> }
>>
>>
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--
Regards/Gruß,
Boris
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