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Subject: media: isppreview: fix __user annotations Author: Mauro Carvalho Chehab <[email protected]> Date: Fri Apr 6 08:33:44 2018 -0400 The 'from' variable at preview_config() expects an __user * type. However, the logic there does: from = *(void * __user *) ((void *)cfg + attr->config_offset); With actually means a void pointer, pointing to a void __ user pointer. When the first pointer is de-referenced with *(foo), the type it returns is "void *" instead of "void __user *". Change it to: from = *(void __user **) ((void *)cfg + attr->config_offset); in order to obtain, when de-referenced, a void __user pointer, as desired. That prevent those warnings: drivers/media/platform/omap3isp/isppreview.c:893:45: warning: incorrect type in initializer (different address spaces) drivers/media/platform/omap3isp/isppreview.c:893:45: expected void [noderef] <asn:1>*from drivers/media/platform/omap3isp/isppreview.c:893:45: got void *[noderef] <asn:1><noident> drivers/media/platform/omap3isp/isppreview.c:893:47: warning: dereference of noderef expression Reviewed-by: Laurent Pinchart <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/platform/omap3isp/isppreview.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index ac30a0f83780..c2ef5870b231 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -890,7 +890,7 @@ static int preview_config(struct isp_prev_device *prev, params = &prev->params.params[!!(active & bit)]; if (cfg->flag & bit) { - void __user *from = *(void * __user *) + void __user *from = *(void __user **) ((void *)cfg + attr->config_offset); void *to = (void *)params + attr->param_offset; size_t size = attr->param_size; _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
