From: Vinod Koul <vkoul@kernel.org>
To: Dave Jiang <dave.jiang@intel.com>
Cc: Mona Hossain <mona.hossain@intel.com>, dmaengine@vger.kernel.org
Subject: Re: [PATCH] dmaengine: idxd: reset states after device disable or reset
Date: Mon, 27 Jul 2020 14:47:57 +0530 [thread overview]
Message-ID: <20200727091757.GT12965@vkoul-mobl> (raw)
In-Reply-To: <159535783121.44497.13003335997381621798.stgit@djiang5-desk3.ch.intel.com>
On 21-07-20, 11:57, Dave Jiang wrote:
> The state for WQs should be reset to disabled when a device is reset or
> disabled.
>
> Fixes: da32b28c95a7 ("dmaengine: idxd: cleanup workqueue config after disabling")
> Reported-by: Mona Hossain <mona.hossain@intel.com>
> Signed-off-by: Dave Jiang <dave.jiang@intel.com>
> ---
> drivers/dma/idxd/device.c | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
> index 14b45853aa5f..d0290072d558 100644
> --- a/drivers/dma/idxd/device.c
> +++ b/drivers/dma/idxd/device.c
> @@ -414,6 +414,7 @@ int idxd_device_disable(struct idxd_device *idxd)
> {
> struct device *dev = &idxd->pdev->dev;
> u32 status;
> + int i;
>
> if (!idxd_is_enabled(idxd)) {
> dev_dbg(dev, "Device is not enabled\n");
> @@ -429,13 +430,33 @@ int idxd_device_disable(struct idxd_device *idxd)
> return -ENXIO;
> }
>
> + for (i = 0; i < idxd->max_wqs; i++) {
> + struct idxd_wq *wq = &idxd->wqs[i];
> +
> + if (wq->state == IDXD_WQ_ENABLED) {
> + idxd_wq_disable_cleanup(wq);
> + wq->state = IDXD_WQ_DISABLED;
> + }
> + }
> idxd->state = IDXD_DEV_CONF_READY;
> return 0;
> }
>
> void idxd_device_reset(struct idxd_device *idxd)
> {
> + int i;
> +
> idxd_cmd_exec(idxd, IDXD_CMD_RESET_DEVICE, 0, NULL);
> +
> + for (i = 0; i < idxd->max_wqs; i++) {
> + struct idxd_wq *wq = &idxd->wqs[i];
> +
> + if (wq->state == IDXD_WQ_ENABLED) {
> + idxd_wq_disable_cleanup(wq);
> + wq->state = IDXD_WQ_DISABLED;
> + }
> + }
Repeated, how about a helper for this?
> + idxd->state = IDXD_DEV_CONF_READY;
> }
>
> /* Device configuration bits */
--
~Vinod
next prev parent reply other threads:[~2020-07-27 9:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-21 18:57 [PATCH] dmaengine: idxd: reset states after device disable or reset Dave Jiang
2020-07-27 9:17 ` Vinod Koul [this message]
2020-07-27 14:47 ` Dave Jiang
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=20200727091757.GT12965@vkoul-mobl \
--to=vkoul@kernel.org \
--cc=dave.jiang@intel.com \
--cc=dmaengine@vger.kernel.org \
--cc=mona.hossain@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: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).