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Subject: media: dvb_frontend: fix wrong cast in compat_ioctl
Author: Katsuhiro Suzuki <suzuki.katsuh...@socionext.com>
Date: Wed Apr 4 04:17:56 2018 -0400
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 <suzuki.katsuh...@socionext.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>
drivers/media/dvb-core/dvb_frontend.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/drivers/media/dvb-core/dvb_frontend.c
b/drivers/media/dvb-core/dvb_frontend.c
index 21a7d4b47e1a..e33414975065 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -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;
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