From bafeafeab94b8d3019aac15c2df2ce47b08a6363 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 13 Jan 2012 09:32:16 +1030 Subject: [PATCH] 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 Cc: Mauro Carvalho Chehab Cc: Eric Piel Cc: linux-media@vger.kernel.org Signed-off-by: Rusty Russell --- drivers/media/video/et61x251/et61x251_core.c | 4 ++-- drivers/media/video/sn9c102/sn9c102_core.c | 4 ++-- drivers/mfd/janz-cmodio.c | 2 +- drivers/misc/lis3lv02d/lis3lv02d.c | 2 ++ include/linux/moduleparam.h | 1 + 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 = ¶m_ops_##type, \ -- 2.20.1