From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: Bhaumik Bhatt <bbhatt@codeaurora.org>
Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org,
jhugo@codeaurora.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 09/12] bus: mhi: core: Check for IRQ availability during registration
Date: Fri, 30 Oct 2020 19:32:16 +0530 [thread overview]
Message-ID: <20201030140216.GK3818@Mani-XPS-13-9360> (raw)
In-Reply-To: <1604031057-32820-10-git-send-email-bbhatt@codeaurora.org>
On Thu, Oct 29, 2020 at 09:10:54PM -0700, Bhaumik Bhatt wrote:
> Current design allows a controller to register with MHI successfully
> without the need to have any IRQs available for use. If no IRQs are
> available, power up requests to MHI can fail after a successful
> registration with MHI. Improve the design by checking for the number
> of IRQs available sooner within the mhi_regsiter_controller() API as
> it is required to be specified by the controller.
>
> Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Thanks,
Mani
> ---
> drivers/bus/mhi/core/init.c | 2 +-
> drivers/bus/mhi/core/pm.c | 3 ---
> 2 files changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
> index 23b6dd6..5dd9e39 100644
> --- a/drivers/bus/mhi/core/init.c
> +++ b/drivers/bus/mhi/core/init.c
> @@ -858,7 +858,7 @@ int mhi_register_controller(struct mhi_controller *mhi_cntrl,
>
> if (!mhi_cntrl->runtime_get || !mhi_cntrl->runtime_put ||
> !mhi_cntrl->status_cb || !mhi_cntrl->read_reg ||
> - !mhi_cntrl->write_reg)
> + !mhi_cntrl->write_reg || !mhi_cntrl->nr_irqs)
> return -EINVAL;
>
> ret = parse_config(mhi_cntrl, config);
> diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
> index 06adea2..1d04e401 100644
> --- a/drivers/bus/mhi/core/pm.c
> +++ b/drivers/bus/mhi/core/pm.c
> @@ -926,9 +926,6 @@ int mhi_async_power_up(struct mhi_controller *mhi_cntrl)
>
> dev_info(dev, "Requested to power ON\n");
>
> - if (mhi_cntrl->nr_irqs < 1)
> - return -EINVAL;
> -
> /* Supply default wake routines if not provided by controller driver */
> if (!mhi_cntrl->wake_get || !mhi_cntrl->wake_put ||
> !mhi_cntrl->wake_toggle) {
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
next prev parent reply other threads:[~2020-10-30 14:02 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-30 4:10 [PATCH v3 00/12] Bug fixes and improvements for MHI power operations Bhaumik Bhatt
2020-10-30 4:10 ` [PATCH v3 01/12] bus: mhi: core: Use appropriate names for firmware load functions Bhaumik Bhatt
2020-10-30 13:29 ` Manivannan Sadhasivam
2020-10-30 4:10 ` [PATCH v3 02/12] bus: mhi: core: Move to using high priority workqueue Bhaumik Bhatt
2020-10-30 13:35 ` Manivannan Sadhasivam
2020-10-30 4:10 ` [PATCH v3 03/12] bus: mhi: core: Skip device wake in error or shutdown states Bhaumik Bhatt
2020-10-30 4:10 ` [PATCH v3 04/12] bus: mhi: core: Move to SYS_ERROR regardless of RDDM capability Bhaumik Bhatt
2020-10-30 13:52 ` Manivannan Sadhasivam
2020-10-30 19:29 ` Bhaumik Bhatt
2020-10-30 4:10 ` [PATCH v3 05/12] bus: mhi: core: Prevent sending multiple RDDM entry callbacks Bhaumik Bhatt
2020-10-30 13:56 ` Manivannan Sadhasivam
2020-10-30 4:10 ` [PATCH v3 06/12] bus: mhi: core: Move to an error state on any firmware load failure Bhaumik Bhatt
2020-10-30 14:00 ` Manivannan Sadhasivam
2020-10-30 4:10 ` [PATCH v3 07/12] bus: mhi: core: Use appropriate label in firmware load handler API Bhaumik Bhatt
2020-10-30 14:00 ` Manivannan Sadhasivam
2020-10-30 4:10 ` [PATCH v3 08/12] bus: mhi: core: Move to an error state on mission mode failure Bhaumik Bhatt
2020-10-30 4:10 ` [PATCH v3 09/12] bus: mhi: core: Check for IRQ availability during registration Bhaumik Bhatt
2020-10-30 14:02 ` Manivannan Sadhasivam [this message]
2020-10-30 4:10 ` [PATCH v3 10/12] bus: mhi: core: Separate system error and power down handling Bhaumik Bhatt
2020-10-30 14:06 ` Manivannan Sadhasivam
2020-10-30 19:34 ` Bhaumik Bhatt
2020-10-31 6:54 ` Manivannan Sadhasivam
2020-11-02 16:52 ` Bhaumik Bhatt
2020-10-30 4:10 ` [PATCH v3 11/12] bus: mhi: core: Mark and maintain device states early on after power down Bhaumik Bhatt
2020-10-30 14:10 ` Manivannan Sadhasivam
2020-10-30 4:10 ` [PATCH v3 12/12] bus: mhi: core: Remove MHI event ring IRQ handlers when powering down Bhaumik Bhatt
2020-10-30 14:11 ` Manivannan Sadhasivam
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=20201030140216.GK3818@Mani-XPS-13-9360 \
--to=manivannan.sadhasivam@linaro.org \
--cc=bbhatt@codeaurora.org \
--cc=hemantk@codeaurora.org \
--cc=jhugo@codeaurora.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®