diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2012-12-03 15:32:36 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-01-10 12:36:47 +0200 |
| commit | 98f3a1b90795d7216de0d56157868d174317f91a (patch) | |
| tree | fa97d798f6f13ad9d818a0bebf69575f8fbaac4d /drivers/usb/gadget/f_mass_storage.c | |
| parent | b642435333b23ab01d526bd854d118704434fc88 (diff) | |
usb: gadget: mass_storage: remove >= 0 check for unsigned type
| In file included from drivers/usb/gadget/acm_ms.c:43:
| f_mass_storage.c:2199:18: warning: comparison of unsigned expression >= 0 is always true [-Wtautological-compare]
| if (common->lun >= 0 && common->lun < common->nluns)
| ~~~~~~~~~~~ ^ ~
common->lun is defined as "unsigned int" so its value is always >= 0.
It is assigned via cbw->Lun which is defined as u8 so it is also not
abused as -1.
[ mina86@mina86.com : make lun unsigned int and use %u in DBG() macro for it ]
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/f_mass_storage.c')
| -rw-r--r-- | drivers/usb/gadget/f_mass_storage.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 4ce732852ae..fc5c16ca5e0 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -1691,7 +1691,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, int needs_medium, const char *name) { int i; - int lun = common->cmnd[1] >> 5; + unsigned int lun = common->cmnd[1] >> 5; static const char dirletter[4] = {'u', 'o', 'i', 'n'}; char hdlen[20]; struct fsg_lun *curlun; @@ -1757,7 +1757,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, /* Check that the LUN values are consistent */ if (common->lun != lun) - DBG(common, "using LUN %d from CBW, not LUN %d from CDB\n", + DBG(common, "using LUN %u from CBW, not LUN %u from CDB\n", common->lun, lun); /* Check the LUN */ @@ -1777,7 +1777,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, */ if (common->cmnd[0] != INQUIRY && common->cmnd[0] != REQUEST_SENSE) { - DBG(common, "unsupported LUN %d\n", common->lun); + DBG(common, "unsupported LUN %u\n", common->lun); return -EINVAL; } } @@ -2169,7 +2169,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) if (common->data_size == 0) common->data_dir = DATA_DIR_NONE; common->lun = cbw->Lun; - if (common->lun >= 0 && common->lun < common->nluns) + if (common->lun < common->nluns) common->curlun = &common->luns[common->lun]; else common->curlun = NULL; |