[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <4b8bc0bf2f1fd87183276816522e92f7b0c3b1fd.camel@linaro.org>
Date: Wed, 24 Jan 2024 09:21:43 +0000
From: André Draszik <andre.draszik@...aro.org>
To: Tudor Ambarus <tudor.ambarus@...aro.org>, broonie@...nel.org,
andi.shyti@...nel.org, arnd@...db.de
Cc: robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
conor+dt@...nel.org, alim.akhtar@...sung.com, linux-spi@...r.kernel.org,
linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-arch@...r.kernel.org, peter.griffin@...aro.org,
semen.protsenko@...aro.org, kernel-team@...roid.com,
willmcvicker@...gle.com
Subject: Re: [PATCH 08/21] spi: s3c64xx: move error check up to avoid
rechecking
Hi Tudor,
On Tue, 2024-01-23 at 15:34 +0000, Tudor Ambarus wrote:
> @@ -538,13 +538,8 @@ static int s3c64xx_wait_for_dma(struct s3c64xx_spi_driver_data *sdd,
> cpu_relax();
> status = readl(regs + S3C64XX_SPI_STATUS);
> }
> -
> }
>
> - /* If timed out while checking rx/tx status return error */
> - if (!val)
> - return -EIO;
> -
This change behaviour of this function. The loop just above adjusts val and it is used to
determine if there was a timeout or not:
if (val && !xfer->rx_buf) {
val = msecs_to_loops(10);
status = readl(regs + S3C64XX_SPI_STATUS);
while ((TX_FIFO_LVL(status, sdd)
|| !S3C64XX_SPI_ST_TX_DONE(status, sdd))
&& --val) {
cpu_relax();
status = readl(regs + S3C64XX_SPI_STATUS);
}
That doesn't work anymore now.
Cheers,
Andre'
Powered by blists - more mailing lists