From: Maulik Shah <mkshah@codeaurora.org>
Date: Thu, 21 Feb 2019 12:40:36 +0000 (+0530)
Subject: drivers: soc: qcom: rpmh-rsc: Correct check for slot number
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=bbeac60f064158aa92b4c72fb50b12231e62cbcd;p=linux.git

drivers: soc: qcom: rpmh-rsc: Correct check for slot number

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>
Signed-off-by: Andy Gross <agross@kernel.org>
---

diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index 75bd9a83aef00..e278fc11fe5cf 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -459,7 +459,7 @@ 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);