Author: Vishwas Srivastava vishu.kernel@gmail.com Date: Mon Jan 25 21:28:17 2016 +0530
Wrong Initialization in davinci emac driver
emac module of the davinci platform supports only 8 tx and 8 rx channels (total 16). emac driver for davinci platform, however, while doing initialization of the dma descriptor head pointers,wrongly initializes the 16 head pointers (instead of 8) for tx dma and 16 head pointers(insted of 8) for rx dma, which is wrong.The result is, that this register initilization spills over the other registers which was not intended and is undesirable.This patch fixes this problem.
Changes for v2: -cleaned up the style format -addressed various comments given by Joe joe.hershberger@ni.com on the first version of the patch.
Signed-off-by: Vishwas Srivastava vishu.kernel@gmail.com CC: Joe Hershberger joe.hershberger@ni.com Acked-by: Joe Hershberger joe.hershberger@ni.com
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index 92c3dca..3f54a3f 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -459,11 +459,11 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
/* Set DMA 8 TX / 8 RX Head pointers to 0 */ addr = &adap_emac->TX0HDP; - for(cnt = 0; cnt < 16; cnt++) + for (cnt = 0; cnt < 8; cnt++) writel(0, addr++);
On Thu, Jan 28, 2016 at 1:27 AM, Joe Hershberger joe.hershberger@gmail.com wrote:
On Mon, Jan 25, 2016 at 11:00 AM, Vishwas Srivastava vishu.kernel@gmail.com wrote:
Author: Vishwas Srivastava vishu.kernel@gmail.com Date: Mon Jan 25 21:28:17 2016 +0530
Please fix the patch subject. No Leading colon.
Wrong Initialization in davinci emac driver emac module of the davinci platform supports only 8 tx and 8 rx channels (total 16). emac driver for davinci platform, however, while doing initialization of the dma descriptor head pointers,wrongly initializes the 16 head pointers (instead of 8) for tx dma and 16 head pointers for rx dma, which is wrong.The result is, that this register initilization spills over the other registers which was not intended and is undesirable.This patch fixes this problem. Signed-off-by: Vishwas Srivastava <vishu.kernel@gmail.com> CC: Sergey Kubushyn <ksi@koi8.net>;Joe Hershberger <joe.hershberger@ni.com>
Please fix this formatting. One "Cc:" per line.
Signed-off-by: Vishwas Srivastava <vishu.kernel@gmail.com>Don't specify this twice.
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index 92c3dca..3f54a3f 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -459,11 +459,11 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
This line wrap is corrupt. The patch won't apply cleanly.
/* Set DMA 8 TX / 8 RX Head pointers to 0 */ addr = &adap_emac->TX0HDP;
for(cnt = 0; cnt < 16; cnt++)
for(cnt = 0; cnt < 8; cnt++) writel(0, addr++); addr = &adap_emac->RX0HDP;
for(cnt = 0; cnt < 16; cnt++)
for(cnt = 0; cnt < 8; cnt++) writel(0, addr++); /* Clear Statistics (do this before setting MacControl register)*/
This line was corrupted by patchwork. You are doing something wrong.
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Please correct all these issues, but for the content of the patch, still Acked.
Thanks, -Joe