Re: [PATCH v1 2/2] drivers: soc: qcom: rpmh-rsc: Correct check for slot number

Lina Iyer
2019-02-21T15:24:08Z

On Thu, Feb 21 2019 at 05:42 -0700, Raju P.L.S.S.S.N wrote:
>From: Maulik Shah <mkshah@codeaurora.org>
>
>The return index value from bitmap_find_next_zero_area can be higher
>than available slot. So correct the check to return error in such case.
>
>Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
>Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org>
Reviewed-by: Lina Iyer <ilina@codeaurora.org>
>---
> drivers/soc/qcom/rpmh-rsc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
>index 10b3102298c7..3ff3bebd4d71 100644
>--- a/drivers/soc/qcom/rpmh-rsc.c
>+++ b/drivers/soc/qcom/rpmh-rsc.c
>@@ -491,7 +491,7 @@ static int find_slots(struct tcs_group *tcs, const struct tcs_request *msg,
> do {
> slot = bitmap_find_next_zero_area(tcs->slots, MAX_TCS_SLOTS,
> i, msg->num_cmds, 0);
>- if (slot == tcs->num_tcs * tcs->ncpt)
>+ if (slot >= tcs->num_tcs * tcs->ncpt)
> return -ENOMEM;
> i += tcs->ncpt;
> } while (slot + msg->num_cmds - 1 >= i);
>--
>QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
>of the Code Aurora Forum, hosted by The Linux Foundation.
>