From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Jaewon Kim <jaewon02.kim@samsung.com>,
Mark Brown <broonie@kernel.org>, Andi Shyti <andi@etezian.org>,
Alim Akhtar <alim.akhtar@samsung.com>
Cc: linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Chanho Park <chanho61.park@samsung.com>
Subject: Re: [PATCH v2 4/4] spi: s3c64xx: support interrupt based pio mode
Date: Thu, 20 Apr 2023 17:37:49 +0200 [thread overview]
Message-ID: <1da788fd-03df-1704-187e-0045876f2605@linaro.org> (raw)
In-Reply-To: <af95919d-f422-feec-b58d-a9b8c54af6d8@samsung.com>
On 19/04/2023 11:45, Jaewon Kim wrote:
>>> static int s3c64xx_wait_for_pio(struct s3c64xx_spi_driver_data *sdd,
>>> - struct spi_transfer *xfer)
>>> + struct spi_transfer *xfer, int use_irq)
>>> {
>>> void __iomem *regs = sdd->regs;
>>> unsigned long val;
>>> + unsigned long time;
>>> u32 status;
>>> int loops;
>>> u32 cpy_len;
>>> @@ -563,17 +568,24 @@ static int s3c64xx_wait_for_pio(struct s3c64xx_spi_driver_data *sdd,
>>> int ms;
>>> u32 tx_time;
>>>
>>> - /* sleep during signal transfer time */
>>> - status = readl(regs + S3C64XX_SPI_STATUS);
>>> - if (RX_FIFO_LVL(status, sdd) < xfer->len) {
>>> - tx_time = (xfer->len * 8 * 1000 * 1000) / sdd->cur_speed;
>>> - usleep_range(tx_time / 2, tx_time);
>>> - }
>> You just added this code. Adding and immediately removing it, suggests
>> this should be one patch.
>>
> This code has been moved, not removed.
Move consists of remove and add. Add it in correct place since beginning.
Best regards,
Krzysztof
next prev parent reply other threads:[~2023-04-20 15:37 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20230419062755epcas2p4c3c7c1e0d58e964f6e884f75ae120d91@epcas2p4.samsung.com>
2023-04-19 6:06 ` [PATCH v2 0/4] Improves polling mode of s3c64xx driver Jaewon Kim
[not found] ` <CGME20230419062755epcas2p1370c1ca60d88d6b114a7c7c1de3f15c0@epcas2p1.samsung.com>
2023-04-19 6:06 ` [PATCH v2 1/4] spi: s3c64xx: changed to PIO mode if there is no DMA Jaewon Kim
2023-04-19 8:03 ` Krzysztof Kozlowski
2023-04-19 8:31 ` Jaewon Kim
2023-04-19 8:36 ` Krzysztof Kozlowski
2023-04-19 15:46 ` Andi Shyti
2023-04-21 1:43 ` Jaewon Kim
2023-04-20 15:40 ` Krzysztof Kozlowski
2023-04-21 1:45 ` Jaewon Kim
[not found] ` <CGME20230419062755epcas2p43a646bbae5f01e3120331407ad873318@epcas2p4.samsung.com>
2023-04-19 6:06 ` [PATCH v2 2/4] spi: s3c64xx: add cpu_relax in polling loop Jaewon Kim
2023-04-19 8:14 ` Krzysztof Kozlowski
2023-04-19 11:13 ` Jaewon Kim
2023-04-20 15:39 ` Krzysztof Kozlowski
2023-04-21 1:45 ` Jaewon Kim
[not found] ` <CGME20230419062755epcas2p1bca14bbd5200ebe5241780d2d7ec1596@epcas2p1.samsung.com>
2023-04-19 6:06 ` [PATCH v2 3/4] spi: s3c64xx: add sleep during transfer Jaewon Kim
2023-04-19 8:19 ` Krzysztof Kozlowski
2023-04-19 9:41 ` Jaewon Kim
2023-04-19 15:56 ` Andi Shyti
2023-04-21 2:53 ` Jaewon Kim
[not found] ` <CGME20230419062755epcas2p43a1127f4bb28cf1cf3f42e5d3cc597cd@epcas2p4.samsung.com>
2023-04-19 6:06 ` [PATCH v2 4/4] spi: s3c64xx: support interrupt based pio mode Jaewon Kim
2023-04-19 8:21 ` Krzysztof Kozlowski
2023-04-19 9:45 ` Jaewon Kim
2023-04-20 15:37 ` Krzysztof Kozlowski [this message]
2023-04-19 16:03 ` Andi Shyti
2023-04-21 3:05 ` Jaewon Kim
2023-04-19 7:59 ` [PATCH v2 0/4] Improves polling mode of s3c64xx driver Krzysztof Kozlowski
2023-04-19 8:29 ` Jaewon Kim
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