From f07d4b4270670b099a7034936e519d2efecf81ec Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 14 Mar 2017 10:51:31 +0300 Subject: [PATCH] staging: atomisp: off by one in atomisp_acc_load_extensions() We should be doing i-- on all error paths but we don't if the loop finishes successfully. I've re-arranged this so that we don't read beyond the end of acc_flag_to_pipe[] array. Fixes: a49d25364dfb ("staging/atomisp: Add support for the Intel IPU v2") Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/staging/media/atomisp/pci/atomisp2/atomisp_acc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_acc.c b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_acc.c index 4c35a785c7d5..212e0a777b4b 100644 --- a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_acc.c +++ b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_acc.c @@ -472,10 +472,8 @@ int atomisp_acc_load_extensions(struct atomisp_sub_device *asd) acc_fw->fw, acc_flag_to_pipe[i].pipe_id, acc_fw->type); - if (ret) { - i--; + if (ret) goto error; - } ext_loaded = true; } @@ -499,7 +497,7 @@ int atomisp_acc_load_extensions(struct atomisp_sub_device *asd) return 0; error: - for (; i >= 0; i--) { + while (--i >= 0) { if (acc_fw->flags & acc_flag_to_pipe[i].flag) { atomisp_css_unload_acc_extension(asd, acc_fw->fw, acc_flag_to_pipe[i].pipe_id); -- 2.30.2