From: Jiri Slaby <jirislaby@kernel.org>
To: Marek Szyprowski <m.szyprowski@samsung.com>, gregkh@linuxfoundation.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH 11/15] tty: msm_serial: use dmaengine_prep_slave_sg()
Date: Tue, 16 Apr 2024 12:23:12 +0200 [thread overview]
Message-ID: <54679d54-3957-489d-a8b5-b98ea1c8a93c@kernel.org> (raw)
In-Reply-To: <d3eb9f21-f3e1-43ec-bf41-984c6aa5cfc8@samsung.com>
On 15. 04. 24, 23:17, Marek Szyprowski wrote:
> On 05.04.2024 08:08, Jiri Slaby (SUSE) wrote:
>> This is a preparatory for the serial-to-kfifo switch. kfifo understands
>> only scatter-gatter approach, so switch to that.
>>
>> No functional change intended, it's just dmaengine_prep_slave_single()
>> inline expanded.
>>
>> And in this case, switch from dma_map_single() to dma_map_sg() too. This
>> needs struct msm_dma changes. I split the rx and tx parts into an union.
>> TX is now struct scatterlist, RX remains the old good phys-virt-count
>> triple.
>>
>> Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
>> Cc: Bjorn Andersson <andersson@kernel.org>
>> Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
>> Cc: linux-arm-msm@vger.kernel.org
>
> I've just found that this patch broke UART operation on DragonBoard
> 410c. I briefly checked and didn't notice anything obviously wrong here,
> but the board stops transmitting any data from its serial port after the
> first message. I will try to analyze this issue a bit more tomorrow.
I double checked, but I see no immediate issues in the patch too. So
please, if you can analyze this more…
thanks,
--
js
suse labs
next prev parent reply other threads:[~2024-04-16 10:23 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-05 6:08 [PATCH 00/15] tty: serial: switch from circ_buf to kfifo Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 01/15] kfifo: drop __kfifo_dma_out_finish_r() Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 02/15] kfifo: introduce and use kfifo_skip_count() Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 03/15] kfifo: add kfifo_out_linear{,_ptr}() Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 04/15] kfifo: remove support for physically non-contiguous memory Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 05/15] kfifo: rename l to len_to_end in setup_sgl() Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 06/15] kfifo: pass offset to setup_sgl_buf() instead of a pointer Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 07/15] kfifo: add kfifo_dma_out_prepare_mapped() Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 08/15] kfifo: fix typos in kernel-doc Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 09/15] tty: 8250_dma: use dmaengine_prep_slave_sg() Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 10/15] tty: 8250_omap: " Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 11/15] tty: msm_serial: " Jiri Slaby (SUSE)
2024-04-15 21:17 ` Marek Szyprowski
2024-04-16 10:23 ` Jiri Slaby [this message]
2024-04-17 10:15 ` Marek Szyprowski
2024-04-17 10:50 ` Jiri Slaby
2024-04-17 12:45 ` Marek Szyprowski
2024-04-19 7:17 ` Jiri Slaby
2024-04-19 7:43 ` Jiri Slaby
2024-04-19 7:53 ` Jiri Slaby
2024-04-19 8:00 ` Marek Szyprowski
2024-04-19 8:09 ` Jiri Slaby
2024-04-19 8:09 ` [PATCH] serial: msm: check dma_map_sg() return value properly Jiri Slaby (SUSE)
2024-04-19 9:03 ` Marek Szyprowski
2024-04-05 6:08 ` [PATCH 12/15] tty: serial: switch from circ_buf to kfifo Jiri Slaby (SUSE)
2024-04-15 12:58 ` Marek Szyprowski
2024-04-15 13:28 ` Jiri Slaby
2024-04-15 14:17 ` Marek Szyprowski
2024-04-16 5:48 ` [PATCH] serial: meson+qcom: don't advance the kfifo twice Jiri Slaby (SUSE)
2024-04-17 10:08 ` [PATCH 12/15] tty: serial: switch from circ_buf to kfifo Anders Roxell
2024-04-17 10:20 ` Marek Szyprowski
2024-04-17 11:19 ` Anders Roxell
2024-04-22 6:45 ` Jiri Slaby
2024-04-22 10:05 ` Anders Roxell
2024-04-16 3:24 ` Pengfei Xu
2024-04-16 7:04 ` Jiri Slaby
2024-04-16 7:19 ` [PATCH] serial: drop debugging WARN_ON_ONCE() from uart_put_char() Jiri Slaby (SUSE)
2024-05-28 15:05 ` [PATCH] serial: drop debugging WARN_ON_ONCE() from uart_write() Tetsuo Handa
2024-06-03 7:10 ` Jiri Slaby
2024-04-05 6:08 ` [PATCH 13/15] tty: atmel_serial: use single DMA mapping for TX Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 14/15] tty: atmel_serial: define macro for RX size Jiri Slaby (SUSE)
2024-04-05 6:08 ` [PATCH 15/15] tty: atmel_serial: use single DMA mapping for RX Jiri Slaby (SUSE)
2024-04-19 15:12 ` [PATCH 00/15] tty: serial: switch from circ_buf to kfifo Neil Armstrong
2024-04-20 5:42 ` Greg KH
2024-04-22 7:50 ` Neil Armstrong
2024-04-22 5:51 ` Jiri Slaby
2024-04-22 7:43 ` neil.armstrong
2024-06-07 20:32 ` Ferry Toth
2024-06-10 20:16 ` Ferry Toth
2024-06-11 7:36 ` Jiri Slaby
2024-06-12 13:13 ` Ilpo Järvinen
2024-06-16 20:55 ` Ferry Toth
2024-06-17 6:23 ` Ilpo Järvinen
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