From: Lucas Stach <l.stach@pengutronix.de>
To: Philipp Puschmann <philipp.puschmann@emlix.com>,
linux-kernel@vger.kernel.org
Cc: festevam@gmail.com, kernel@pengutronix.de,
gregkh@linuxfoundation.org, s.hauer@pengutronix.de,
vkoul@kernel.org, linux-imx@nxp.com,
linux-serial@vger.kernel.org, jslaby@suse.com,
dmaengine@vger.kernel.org, dan.j.williams@intel.com,
shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 4/4] dmaengine: imx-sdma: drop redundant variable
Date: Mon, 16 Sep 2019 16:30:25 +0200 [thread overview]
Message-ID: <fcc6e54f56089d2204ca9aff79ac769a62b3adcb.camel@pengutronix.de> (raw)
In-Reply-To: <20190911144943.21554-5-philipp.puschmann@emlix.com>
On Mi, 2019-09-11 at 16:49 +0200, Philipp Puschmann wrote:
> In sdma_prep_dma_cyclic buf is redundant. Drop it.
>
> Signed-off-by: Philipp Puschmann <philipp.puschmann@emlix.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
> ---
> drivers/dma/imx-sdma.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 6a5a84504858..5b6beeee9f0e 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -1544,7 +1544,7 @@ static struct dma_async_tx_descriptor
> *sdma_prep_dma_cyclic(
> struct sdma_engine *sdma = sdmac->sdma;
> int num_periods = buf_len / period_len;
> int channel = sdmac->channel;
> - int i = 0, buf = 0;
> + int i;
> struct sdma_desc *desc;
>
> dev_dbg(sdma->dev, "%s channel: %d\n", __func__, channel);
> @@ -1565,7 +1565,7 @@ static struct dma_async_tx_descriptor
> *sdma_prep_dma_cyclic(
> goto err_bd_out;
> }
>
> - while (buf < buf_len) {
> + for (i = 0; i < num_periods; i++) {
> struct sdma_buffer_descriptor *bd = &desc->bd[i];
> int param;
>
> @@ -1592,9 +1592,6 @@ static struct dma_async_tx_descriptor
> *sdma_prep_dma_cyclic(
> bd->mode.status = param;
>
> dma_addr += period_len;
> - buf += period_len;
> -
> - i++;
> }
>
> return vchan_tx_prep(&sdmac->vc, &desc->vd, flags);
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next prev parent reply other threads:[~2019-09-16 14:30 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 14:49 [PATCH 0/4] Fix UART DMA freezes for iMX6 Philipp Puschmann
2019-09-11 14:49 ` [PATCH 1/4] dmaengine: imx-sdma: fix buffer ownership Philipp Puschmann
2019-09-16 14:17 ` Lucas Stach
2019-09-19 9:20 ` Philipp Puschmann
2019-09-11 14:49 ` [PATCH 2/4] dmaengine: imx-sdma: fix dma freezes Philipp Puschmann
2019-09-16 14:22 ` Lucas Stach
2019-09-11 14:49 ` [PATCH 3/4] serial: imx: adapt rx buffer and dma periods Philipp Puschmann
2019-09-16 14:24 ` Lucas Stach
2019-09-11 14:49 ` [PATCH 4/4] dmaengine: imx-sdma: drop redundant variable Philipp Puschmann
2019-09-16 14:30 ` Lucas Stach [this message]
2019-09-12 15:31 ` [PATCH 0/4] Fix UART DMA freezes for iMX6 Fabio Estevam
2019-09-12 18:23 ` Fabio Estevam
2019-09-16 13:55 ` Philipp Puschmann
2019-09-16 14:00 ` Fabio Estevam
2019-09-16 14:10 ` [EXT] " Andy Duan
2019-09-16 8:02 ` Robin Gong
2019-09-16 13:41 ` Philipp Puschmann
2019-09-19 10:23 ` [PATCH v2 0/3] Fix UART DMA freezes for i.MX SOCs Philipp Puschmann
2019-09-19 10:23 ` [PATCH v2 1/3] dmaengine: imx-sdma: fix buffer ownership Philipp Puschmann
2019-09-19 10:27 ` Lucas Stach
2019-09-19 10:34 ` Philipp Puschmann
2019-09-19 10:23 ` [PATCH v2 2/3] dmaengine: imx-sdma: fix dma freezes Philipp Puschmann
2019-09-19 10:23 ` [PATCH v2 3/3] dmaengine: imx-sdma: drop redundant variable Philipp Puschmann
2019-09-19 10:33 ` [PATCH v2 0/3] Fix UART DMA freezes for i.MX SOCs Fabio Estevam
2019-09-19 10:45 ` [PATCH v3 " Philipp Puschmann
2019-09-19 10:45 ` [PATCH v3 1/3] dmaengine: imx-sdma: fix buffer ownership Philipp Puschmann
2019-09-19 11:37 ` Fabio Estevam
2019-09-19 11:42 ` Philipp Puschmann
2019-09-19 10:45 ` [PATCH v3 2/3] dmaengine: imx-sdma: fix dma freezes Philipp Puschmann
2019-09-19 10:45 ` [PATCH v3 3/3] dmaengine: imx-sdma: drop redundant variable Philipp Puschmann
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