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media: don't do a 31 bit shift on a signed int

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On 32-bits archs, a signed integer has 31 bits plus on extra
bit for signal. Due to that, touching the 32th bit with something
like:

	int bar = 1 << 31;

has an undefined behavior in C on 32 bit architectures, as it
touches the signal bit. This is warned by cppcheck.

Instead, force the numbers to be unsigned, in order to solve this
issue.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab
2019-08-22 11:16:42 -03:00
parent cce8ccca80
commit 95c520690f
19 changed files with 38 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/usb/dvb-usb-v2/gl861.c
View File

@@ -353,7 +353,7 @@ static int friio_ext_ctl(struct dvb_usb_device *d,
ret += i2c_transfer(&d->i2c_adap, &msg, 1);
/* send 32bit(satur, R, G, B) data in serial */
mask = 1 << 31;
mask = 1UL << 31;
for (i = 0; i < 32; i++) {
buf[1] = power | FRIIO_CTL_STROBE;
if (sat_color & mask)

14
drivers/media/usb/pvrusb2/pvrusb2-hdw.c
View File

@@ -660,7 +660,7 @@ static int ctrl_check_input(struct pvr2_ctrl *cptr,int v)
{
if (v < 0 || v > PVR2_CVAL_INPUT_MAX)
return 0;
return ((1 << v) & cptr->hdw->input_allowed_mask) != 0;
return ((1UL << v) & cptr->hdw->input_allowed_mask) != 0;
}
static int ctrl_set_input(struct pvr2_ctrl *cptr,int m,int v)
@@ -2445,7 +2445,7 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
/* Ensure that default input choice is a valid one. */
m = hdw->input_avail_mask;
if (m) for (idx = 0; idx < (sizeof(m) << 3); idx++) {
if (!((1 << idx) & m)) continue;
if (!((1UL << idx) & m)) continue;
hdw->input_val = idx;
break;
}
@@ -2501,11 +2501,11 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
// Initialize control data regarding video standard masks
valid_std_mask = pvr2_std_get_usable();
for (idx = 0; idx < 32; idx++) {
if (!(valid_std_mask & (1 << idx))) continue;
if (!(valid_std_mask & (1UL << idx))) continue;
cnt1 = pvr2_std_id_to_str(
hdw->std_mask_names[idx],
sizeof(hdw->std_mask_names[idx])-1,
1 << idx);
1UL << idx);
hdw->std_mask_names[idx][cnt1] = 0;
}
cptr = pvr2_hdw_get_ctrl_by_id(hdw,PVR2_CID_STDAVAIL);
@@ -4672,7 +4672,7 @@ static unsigned int print_input_mask(unsigned int msk,
unsigned int idx,ccnt;
unsigned int tcnt = 0;
for (idx = 0; idx < ARRAY_SIZE(control_values_input); idx++) {
if (!((1 << idx) & msk)) continue;
if (!((1UL << idx) & msk)) continue;
ccnt = scnprintf(buf+tcnt,
acnt-tcnt,
"%s%s",
@@ -5099,7 +5099,7 @@ int pvr2_hdw_set_input_allowed(struct pvr2_hdw *hdw,
break;
}
hdw->input_allowed_mask = nv;
if ((1 << hdw->input_val) & hdw->input_allowed_mask) {
if ((1UL << hdw->input_val) & hdw->input_allowed_mask) {
/* Current mode is still in the allowed mask, so
we're done. */
break;
@@ -5112,7 +5112,7 @@ int pvr2_hdw_set_input_allowed(struct pvr2_hdw *hdw,
}
m = hdw->input_allowed_mask;
for (idx = 0; idx < (sizeof(m) << 3); idx++) {
if (!((1 << idx) & m)) continue;
if (!((1UL << idx) & m)) continue;
pvr2_hdw_set_input(hdw,idx);
break;
}

4
drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
View File

@@ -1003,7 +1003,7 @@ static int pvr2_v4l2_open(struct file *file)
input_mask &= pvr2_hdw_get_input_available(hdw);
input_cnt = 0;
for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
if (input_mask & (1 << idx)) input_cnt++;
if (input_mask & (1UL << idx)) input_cnt++;
}
fhp->input_cnt = input_cnt;
fhp->input_map = kzalloc(input_cnt,GFP_KERNEL);
@@ -1018,7 +1018,7 @@ static int pvr2_v4l2_open(struct file *file)
}
input_cnt = 0;
for (idx = 0; idx < (sizeof(input_mask) << 3); idx++) {
if (!(input_mask & (1 << idx))) continue;
if (!(input_mask & (1UL << idx))) continue;
fhp->input_map[input_cnt++] = idx;
}