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>
---
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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