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media: dvb_frontend: fix wrong cast in compat_ioctl

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FE_GET_PROPERTY has always failed as following situations:
  - Use compatible ioctl
  - The array of 'struct dtv_property' has 2 or more items

This patch fixes wrong cast to a pointer 'struct dtv_property' from a
pointer of 2nd or after item of 'struct compat_dtv_property' array.

Signed-off-by: Katsuhiro Suzuki <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Katsuhiro Suzuki 2018-04-04 04:17:56 -04:00 • committed by Mauro Carvalho Chehab
commit 5c6c9c4830
1 changed files with 1 additions and 1 deletions
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2
drivers/media/dvb-core/dvb_frontend.c
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@ -2089,7 +2089,7 @@ static int dvb_frontend_handle_compat_ioctl(struct file *file, unsigned int cmd,
}
for (i = 0; i < tvps->num; i++) {
err = dtv_property_process_get(
fe, &getp, (struct dtv_property *)tvp + i, file);
fe, &getp, (struct dtv_property *)(tvp + i), file);
if (err < 0) {
kfree(tvp);
return err;