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authorRusty Russell <rusty@rustcorp.com.au>2012-01-13 09:32:16 +1030
committerRusty Russell <rusty@rustcorp.com.au>2012-01-13 09:32:16 +1030
commitbafeafeab94b8d3019aac15c2df2ce47b08a6363 (patch)
treec121e82aee4f0969cf90dfb2dbad46d06a669696
parente49ce14150c64b29a8dd211df785576fa19a9858 (diff)
downloadlinux-bafeafeab94b8d3019aac15c2df2ce47b08a6363.tar.bz2
module_param: check type correctness for module_param_array
module_param_array(), unlike its non-array cousins, didn't check the type of the variable. Fixing this found two bugs. Cc: Luca Risolia <luca.risolia@studio.unibo.it> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Eric Piel <eric.piel@tremplin-utc.net> Cc: linux-media@vger.kernel.org Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
-rw-r--r--drivers/media/video/et61x251/et61x251_core.c4
-rw-r--r--drivers/media/video/sn9c102/sn9c102_core.c4
-rw-r--r--drivers/mfd/janz-cmodio.c2
-rw-r--r--drivers/misc/lis3lv02d/lis3lv02d.c2
-rw-r--r--include/linux/moduleparam.h1
5 files changed, 8 insertions, 5 deletions
diff --git a/drivers/media/video/et61x251/et61x251_core.c b/drivers/media/video/et61x251/et61x251_core.c
index 40f214ab924f..5539f09440ac 100644
--- a/drivers/media/video/et61x251/et61x251_core.c
+++ b/drivers/media/video/et61x251/et61x251_core.c
@@ -76,8 +76,8 @@ MODULE_PARM_DESC(video_nr,
"\none and for every other camera."
"\n");
-static short force_munmap[] = {[0 ... ET61X251_MAX_DEVICES-1] =
- ET61X251_FORCE_MUNMAP};
+static bool force_munmap[] = {[0 ... ET61X251_MAX_DEVICES-1] =
+ ET61X251_FORCE_MUNMAP};
module_param_array(force_munmap, bool, NULL, 0444);
MODULE_PARM_DESC(force_munmap,
"\n<0|1[,...]> Force the application to unmap previously"
diff --git a/drivers/media/video/sn9c102/sn9c102_core.c b/drivers/media/video/sn9c102/sn9c102_core.c
index 7025be129286..c2882fa5be85 100644
--- a/drivers/media/video/sn9c102/sn9c102_core.c
+++ b/drivers/media/video/sn9c102/sn9c102_core.c
@@ -75,8 +75,8 @@ MODULE_PARM_DESC(video_nr,
"\none and for every other camera."
"\n");
-static short force_munmap[] = {[0 ... SN9C102_MAX_DEVICES-1] =
- SN9C102_FORCE_MUNMAP};
+static bool force_munmap[] = {[0 ... SN9C102_MAX_DEVICES-1] =
+ SN9C102_FORCE_MUNMAP};
module_param_array(force_munmap, bool, NULL, 0444);
MODULE_PARM_DESC(force_munmap,
" <0|1[,...]>"
diff --git a/drivers/mfd/janz-cmodio.c b/drivers/mfd/janz-cmodio.c
index 5c2a06acb77f..a9223ed1b7c5 100644
--- a/drivers/mfd/janz-cmodio.c
+++ b/drivers/mfd/janz-cmodio.c
@@ -33,7 +33,7 @@
/* Module Parameters */
static unsigned int num_modules = CMODIO_MAX_MODULES;
-static unsigned char *modules[CMODIO_MAX_MODULES] = {
+static char *modules[CMODIO_MAX_MODULES] = {
"empty", "empty", "empty", "empty",
};
diff --git a/drivers/misc/lis3lv02d/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c
index 29d12a70eb1b..a981e2a42f92 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d.c
@@ -111,6 +111,8 @@ static struct kernel_param_ops param_ops_axis = {
.get = param_get_int,
};
+#define param_check_axis(name, p) param_check_int(name, p)
+
module_param_array_named(axes, lis3_dev.ac.as_array, axis, NULL, 0644);
MODULE_PARM_DESC(axes, "Axis-mapping for x,y,z directions");
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 7939f636c8ba..794d4b0f1215 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -395,6 +395,7 @@ extern int param_get_invbool(char *buffer, const struct kernel_param *kp);
* module_param_named() for why this might be necessary.
*/
#define module_param_array_named(name, array, type, nump, perm) \
+ param_check_##type(name, &(array)[0]); \
static const struct kparam_array __param_arr_##name \
= { .max = ARRAY_SIZE(array), .num = nump, \
.ops = &param_ops_##type, \