From: Scott Branden <sbranden@broadcom.com> To: Dan Williams <dan.j.williams@intel.com>, Vinod Koul <vinod.koul@intel.com> Cc: <bcm-kernel-feedback-list@broadcom.com>, Dmitry Torokhov <dtor@google.com>, Anatol Pomazao <anatol@google.com>, <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, ismail <ismail@broadcom.com>, Scott Branden <sbranden@broadcom.com> Subject: [PATCH] dmaengine: pl330: fix the race condition in pl330 driver. Date: Thu, 26 Mar 2015 16:55:05 -0700 [thread overview] Message-ID: <1427414105-3480-1-git-send-email-sbranden@broadcom.com> (raw) From: ismail <ismail@broadcom.com> Update the thread running index before issuing the GO command to the DMAC. Tested-by: Mohamed Ismail Abdul Packir Mohamed <ismail@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Arun Parameswaran <aparames@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Mohamed Ismail Abdul Packir Mohamed <ismail@broadcom.com> --- drivers/dma/pl330.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 0e1f567..631642d 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -1072,11 +1072,11 @@ static bool _trigger(struct pl330_thread *thrd) /* Set to generate interrupts for SEV */ writel(readl(regs + INTEN) | (1 << thrd->ev), regs + INTEN); + thrd->req_running = idx; + /* Only manager can execute GO */ _execute_DBGINSN(thrd, insn, true); - thrd->req_running = idx; - return true; } -- 2.3.3
WARNING: multiple messages have this Message-ID (diff)
From: sbranden@broadcom.com (Scott Branden) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] dmaengine: pl330: fix the race condition in pl330 driver. Date: Thu, 26 Mar 2015 16:55:05 -0700 [thread overview] Message-ID: <1427414105-3480-1-git-send-email-sbranden@broadcom.com> (raw) From: ismail <ismail@broadcom.com> Update the thread running index before issuing the GO command to the DMAC. Tested-by: Mohamed Ismail Abdul Packir Mohamed <ismail@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Arun Parameswaran <aparames@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Mohamed Ismail Abdul Packir Mohamed <ismail@broadcom.com> --- drivers/dma/pl330.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 0e1f567..631642d 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -1072,11 +1072,11 @@ static bool _trigger(struct pl330_thread *thrd) /* Set to generate interrupts for SEV */ writel(readl(regs + INTEN) | (1 << thrd->ev), regs + INTEN); + thrd->req_running = idx; + /* Only manager can execute GO */ _execute_DBGINSN(thrd, insn, true); - thrd->req_running = idx; - return true; } -- 2.3.3
next reply other threads:[~2015-03-26 23:55 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-03-26 23:55 Scott Branden [this message] 2015-03-26 23:55 ` [PATCH] dmaengine: pl330: fix the race condition in pl330 driver Scott Branden 2015-03-29 21:55 ` Scott Branden 2015-03-29 21:55 ` Scott Branden 2015-03-30 16:47 ` Jassi Brar 2015-03-30 16:47 ` Jassi Brar 2015-03-30 17:25 ` Vinod Koul 2015-03-30 17:25 ` Vinod Koul 2015-03-31 3:40 ` Scott Branden 2015-03-31 3:40 ` Scott Branden 2015-03-31 5:20 ` Jassi Brar 2015-03-31 5:20 ` Jassi Brar 2015-03-31 22:04 ` Scott Branden 2015-03-31 22:04 ` Scott Branden
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=1427414105-3480-1-git-send-email-sbranden@broadcom.com \ --to=sbranden@broadcom.com \ --cc=anatol@google.com \ --cc=bcm-kernel-feedback-list@broadcom.com \ --cc=dan.j.williams@intel.com \ --cc=dtor@google.com \ --cc=ismail@broadcom.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=vinod.koul@intel.com \ /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: linkBe 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.