From: Al Viro <viro@ZenIV.linux.org.uk>
To: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
linux-media@vger.kernel.org
Subject: [PATCH][davinci] ccdc_update_raw_params() frees the wrong thing
Date: Sun, 13 Dec 2015 00:32:01 +0000 [thread overview]
Message-ID: <20151213003201.GQ20997@ZenIV.linux.org.uk> (raw)
Passing a physical address to free_pages() is a bad idea.
config_params->fault_pxl.fpc_table_addr is set to virt_to_phys()
of __get_free_pages() return value; what we should pass to free_pages()
is its phys_to_virt(). ccdc_close() does that properly, but
ccdc_update_raw_params() doesn't.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/media/platform/davinci/dm644x_ccdc.c b/drivers/media/platform/davinci/dm644x_ccdc.c
index ffbefdf..6fba32b 100644
--- a/drivers/media/platform/davinci/dm644x_ccdc.c
+++ b/drivers/media/platform/davinci/dm644x_ccdc.c
@@ -261,7 +261,7 @@ static int ccdc_update_raw_params(struct ccdc_config_params_raw *raw_params)
*/
if (raw_params->fault_pxl.fp_num != config_params->fault_pxl.fp_num) {
if (fpc_physaddr != NULL) {
- free_pages((unsigned long)fpc_physaddr,
+ free_pages((unsigned long)fpc_virtaddr,
get_order
(config_params->fault_pxl.fp_num *
FP_NUM_BYTES));
next reply other threads:[~2015-12-13 0:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-13 0:32 Al Viro [this message]
2016-01-05 17:37 ` [PATCH][davinci] ccdc_update_raw_params() frees the wrong thing Lad, Prabhakar
2016-01-06 16:34 ` Al Viro
2016-01-06 17:14 ` Lad, Prabhakar
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