ieee1394: dv1394, video1394: remove unnecessary expressions

init->channel and v.buffer are unsigned and tests for < 0 therefore
always false.  gcc knows this and eliminates the code, but anyway...
Reported by Roel Kluin.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c
index b6eb2cf..df70f51 100644 (file)
--- a/drivers/ieee1394/dv1394.c
+++ b/drivers/ieee1394/dv1394.c
@@ -918,7 +918,7 @@ static int do_dv1394_init(struct video_card *video, struct dv1394_init *init)
                /* default SYT offset is 3 cycles */
                init->syt_offset = 3;
 
-       if ( (init->channel > 63) || (init->channel < 0) )
+       if (init->channel > 63)
                init->channel = 63;
 
        chan_mask = (u64)1 << init->channel;

diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c
index 25db6e6..fa9e7d8 100644 (file)
--- a/drivers/ieee1394/video1394.c
+++ b/drivers/ieee1394/video1394.c
@@ -893,7 +893,7 @@ static long video1394_ioctl(struct file *file,
                if (unlikely(d == NULL))
                        return -EFAULT;
 
-               if (unlikely((v.buffer<0) || (v.buffer>=d->num_desc - 1))) {
+               if (unlikely(v.buffer >= d->num_desc - 1)) {
                        PRINT(KERN_ERR, ohci->host->id,
                              "Buffer %d out of range",v.buffer);
                        return -EINVAL;
@@ -959,7 +959,7 @@ static long video1394_ioctl(struct file *file,
                if (unlikely(d == NULL))
                        return -EFAULT;
 
-               if (unlikely((v.buffer<0) || (v.buffer>d->num_desc - 1))) {
+               if (unlikely(v.buffer > d->num_desc - 1)) {
                        PRINT(KERN_ERR, ohci->host->id,
                              "Buffer %d out of range",v.buffer);
                        return -EINVAL;
@@ -1030,7 +1030,7 @@ static long video1394_ioctl(struct file *file,
                d = find_ctx(&ctx->context_list, OHCI_ISO_TRANSMIT, v.channel);
                if (d == NULL) return -EFAULT;
 
-               if ((v.buffer<0) || (v.buffer>=d->num_desc - 1)) {
+               if (v.buffer >= d->num_desc - 1) {
                        PRINT(KERN_ERR, ohci->host->id,
                              "Buffer %d out of range",v.buffer);
                        return -EINVAL;
@@ -1137,7 +1137,7 @@ static long video1394_ioctl(struct file *file,
                d = find_ctx(&ctx->context_list, OHCI_ISO_TRANSMIT, v.channel);
                if (d == NULL) return -EFAULT;
 
-               if ((v.buffer<0) || (v.buffer>=d->num_desc-1)) {
+               if (v.buffer >= d->num_desc - 1) {
                        PRINT(KERN_ERR, ohci->host->id,
                              "Buffer %d out of range",v.buffer);
                        return -EINVAL;