All of lore.kernel.org
 help / color / mirror / Atom feed
From: Raju P L S S S N <rplsssn@codeaurora.org>
To: andy.gross@linaro.org, david.brown@linaro.org,
	linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org
Cc: rnayak@codeaurora.org, bjorn.andersson@linaro.org,
	linux-kernel@vger.kernel.org, sboyd@kernel.org,
	evgreen@chromium.org, dianders@chromium.org, mka@chromium.org,
	ilina@codeaurora.org, "Raju P.L.S.S.S.N" <rplsssn@codeaurora.org>
Subject: [PATCH] drivers: qcom: rpmh: fix unwanted error check for get_tcs_of_type()
Date: Fri, 13 Jul 2018 19:15:46 +0530	[thread overview]
Message-ID: <1531489546-21577-1-git-send-email-rplsssn@codeaurora.org> (raw)

From: "Raju P.L.S.S.S.N" <rplsssn@codeaurora.org>

The patch fixes the bug reported by Dan Carpenter.
It removes the unnecessary err check for ‘tcs’ reported by
static checker warning:

drivers/soc/qcom/rpmh-rsc.c:111 tcs_invalidate()
warn: 'tcs' isn't an ERR_PTR
See also:
drivers/soc/qcom/rpmh-rsc.c:178 get_tcs_for_msg() warn: 'tcs' isn't
an ERR_PTR
drivers/soc/qcom/rpmh-rsc.c:180 get_tcs_for_msg() warn: 'tcs' isn't
an ERR_PTR

https://www.spinics.net/lists/linux-soc/msg04624.html

Fixes: 48dbb0f02d34 ("drivers: qcom: rpmh-rsc: allow invalidation
of sleep/wake TCS")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org>
---
 drivers/soc/qcom/rpmh-rsc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index 098feb9..fefda0f 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -107,8 +107,6 @@ static int tcs_invalidate(struct rsc_drv *drv, int type)
 	struct tcs_group *tcs;
 
 	tcs = get_tcs_of_type(drv, type);
-	if (IS_ERR(tcs))
-		return PTR_ERR(tcs);
 
 	spin_lock(&tcs->lock);
 	if (bitmap_empty(tcs->slots, MAX_TCS_SLOTS)) {
@@ -174,9 +172,9 @@ static struct tcs_group *get_tcs_for_msg(struct rsc_drv *drv,
 	 * TCSes before making an active state request.
 	 */
 	tcs = get_tcs_of_type(drv, type);
-	if (msg->state == RPMH_ACTIVE_ONLY_STATE && IS_ERR(tcs)) {
+	if (msg->state == RPMH_ACTIVE_ONLY_STATE && !tcs->num_tcs) {
 		tcs = get_tcs_of_type(drv, WAKE_TCS);
-		if (!IS_ERR(tcs)) {
+		if (tcs->num_tcs) {
 			ret = rpmh_rsc_invalidate(drv);
 			if (ret)
 				return ERR_PTR(ret);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project

             reply	other threads:[~2018-07-13 13:45 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-13 13:45 Raju P L S S S N [this message]
2018-07-13 15:30 ` [PATCH] drivers: qcom: rpmh: fix unwanted error check for get_tcs_of_type() Lina Iyer
2018-07-18 17:08 ` Lina Iyer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1531489546-21577-1-git-send-email-rplsssn@codeaurora.org \
    --to=rplsssn@codeaurora.org \
    --cc=andy.gross@linaro.org \
    --cc=bjorn.andersson@linaro.org \
    --cc=david.brown@linaro.org \
    --cc=dianders@chromium.org \
    --cc=evgreen@chromium.org \
    --cc=ilina@codeaurora.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-soc@vger.kernel.org \
    --cc=mka@chromium.org \
    --cc=rnayak@codeaurora.org \
    --cc=sboyd@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.