Linux-ARM-MSM Archive on lore.kernel.org
 help / color / Atom feed
From: Akash Asthana <akashast@codeaurora.org>
To: Matthias Kaehlcke <mka@chromium.org>
Cc: gregkh@linuxfoundation.org, swboyd@chromium.org,
	mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org,
	linux-serial@vger.kernel.org
Subject: Re: [PATCH v6 3/5] tty: serial: qcom_geni_serial: IRQ cleanup
Date: Mon, 25 Nov 2019 12:04:29 +0000
Message-ID: <0101016ea272e602-867139da-a6df-429e-87d0-2e697c35b139-000000@us-west-2.amazonses.com> (raw)
In-Reply-To: <20191122184618.GN27773@google.com>


On 11/23/2019 12:16 AM, Matthias Kaehlcke wrote:
> On Fri, Nov 22, 2019 at 02:18:12PM +0000, Akash Asthana wrote:
>> Move ISR registration from startup to probe function to avoid registering
>> it everytime when the port open is called for driver.
>>
>> Signed-off-by: Akash Asthana <akashast@codeaurora.org>
>> ---
>> Changes in v6:
>>   - Rebased on tty-next branch
>>
>> Changes in v5:
>>   - No change.
>>
>> Changes in v4:
>>   - As per Stephen's comment, move ISR registration(later in probe) after
>>     registering uart port with serial core.
>>   - As per Greg's comment, corrected returning of PTR value from integer type
>>     function(probe).
>>
>> Changes in v3:
>>   - As per Stephen's comment, using devm_kasprintf instead of scnprintf API.
>>
>>   drivers/tty/serial/qcom_geni_serial.c | 38 ++++++++++++++++++++++++-----------
>>   1 file changed, 26 insertions(+), 12 deletions(-)
>>
>> diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
>> index 14c6306..634054a 100644
>> --- a/drivers/tty/serial/qcom_geni_serial.c
>> +++ b/drivers/tty/serial/qcom_geni_serial.c
>>
>> ...
>>
>> @@ -1307,7 +1307,21 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
>>   	port->handle_rx = console ? handle_rx_console : handle_rx_uart;
>>   	if (!console)
>>   		device_create_file(uport->dev, &dev_attr_loopback);
>> -	return uart_add_one_port(drv, uport);
>> +
>> +	ret = uart_add_one_port(drv, uport);
>> +	if (ret)
>> +		return ret;
>> +
>> +	irq_set_status_flags(uport->irq, IRQ_NOAUTOEN);
>> +	ret = devm_request_irq(uport->dev, uport->irq, qcom_geni_serial_isr,
>> +			IRQF_TRIGGER_HIGH, port->name, uport);
>> +	if (ret) {
>> +		dev_err(uport->dev, "Failed to get IRQ ret %d\n", ret);
>> +		uart_remove_one_port(drv, uport);
>> +		return ret;
> nit: could fall through
>
>> +	}
>> +
>> +	return ret;
> nit: if not falling through above this could/should be 0.
ok, will change it to return 0;
> Reviewed-by: Matthias Kaehlcke <mka@chromium.org>

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project


  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1574432266-20732-1-git-send-email-akashast@codeaurora.org>
2019-11-22 14:18 ` [PATCH v6 1/5] Revert "tty: serial: qcom_geni_serial: Wakeup over UART RX" Akash Asthana
2019-11-22 14:18 ` [PATCH v6 2/5] Revert "tty: serial: qcom_geni_serial: IRQ cleanup" Akash Asthana
2019-11-22 14:18 ` [PATCH v6 3/5] tty: serial: qcom_geni_serial: IRQ cleanup Akash Asthana
2019-11-22 18:46   ` Matthias Kaehlcke
2019-11-25 12:04     ` Akash Asthana [this message]
2019-11-22 14:18 ` [PATCH v6 4/5] tty: serial: qcom_geni_serial: Wakeup over UART RX Akash Asthana
2019-11-22 18:22   ` Stephen Boyd
2019-11-25 12:06     ` Akash Asthana
2019-11-22 19:11   ` Matthias Kaehlcke
2019-11-25 12:06     ` Akash Asthana
2019-11-22 14:18 ` [PATCH v6 5/5] tty: serial: qcom_geni_serial: Move loopback support to TIOCM_LOOP Akash Asthana
2019-11-22 18:07   ` Stephen Boyd
     [not found] ` <0101016e937a3f78-11fa1469-8c73-4f56-a3de-3221dcf6f0e3-000000@us-west-2.amazonses.com>
2019-11-22 18:15   ` [PATCH v6 3/5] tty: serial: qcom_geni_serial: IRQ cleanup Stephen Boyd

Reply instructions:

You may reply publically 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=0101016ea272e602-867139da-a6df-429e-87d0-2e697c35b139-000000@us-west-2.amazonses.com \
    --to=akashast@codeaurora.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-serial@vger.kernel.org \
    --cc=mgautam@codeaurora.org \
    --cc=mka@chromium.org \
    --cc=swboyd@chromium.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

Linux-ARM-MSM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-arm-msm/0 linux-arm-msm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-msm linux-arm-msm/ https://lore.kernel.org/linux-arm-msm \
		linux-arm-msm@vger.kernel.org
	public-inbox-index linux-arm-msm

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-arm-msm


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git