Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1364200

[PATCH 1/1] net: macb: replace macb_writel() call by queue_writel() to update queue ISR

Show all headers | View raw

macb_interrupt() should not use macb_writel(bp, ISR, <value>) but only
queue_writel(queue, ISR, <value>).

There is one IRQ and one set of {ISR, IER, IDR, IMR} [1] registers per
queue on gem hardware, though only queue0 is actually used for now to
receive frames: other queues can already be used to transmit frames.

The queue_readl() and queue_writel() helper macros are designed to access
the relevant IRQ registers.

[1]
ISR: Interrupt Status Register
IER: Interrupt Enable Register
IDR: Interrupt Disable Register
IMR: Interrupt Mask Register

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Fixes: bfbb92c44670 ("net: macb: Handle the RXUBR interrupt on all devices")
---
 drivers/net/ethernet/cadence/macb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 39447a337149..c9c6b2762a39 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -1146,7 +1146,7 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id)
 			macb_writel(bp, NCR, ctrl | MACB_BIT(RE));
 
 			if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE)
-				macb_writel(bp, ISR, MACB_BIT(RXUBR));
+				queue_writel(queue, ISR, MACB_BIT(RXUBR));
 		}
 
 		if (status & MACB_BIT(ISR_ROVR)) {
-- 
1.8.2.2

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 1/1] net: macb: replace macb_writel() call by queue_writel() to update queue ISR Cyrille Pitchen <cyrille.pitchen@atmel.com> - 2016-03-24 15:40 +0100
  Re: [PATCH 1/1] net: macb: replace macb_writel() call by  queue_writel() to update queue ISR Nicolas Ferre <nicolas.ferre@atmel.com> - 2016-03-24 16:40 +0100
  Re: [PATCH 1/1] net: macb: replace macb_writel() call by  queue_writel() to update queue ISR David Miller <davem@davemloft.net> - 2016-03-24 20:00 +0100

csiph-web