at_hdmac: bugfix for enabling channel irq
commit 463894705e4089d0ff69e7d877312d496ac70e5b deleted redundant
chan_id and chancnt initialization in dma drivers as this is done
in dma_async_device_register().
However, atc_enable_irq() relied on chan_id set before registering
the device, what left only channel 0 functional for this driver.
This patch introduces atc_enable/disable_chan_irq() as a variant
of atc_enable/disable_irq() with the channel as explicit argument.
Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
diff --git a/drivers/dma/at_hdmac_regs.h b/drivers/dma/at_hdmac_regs.h
index dcaedfc..a8d3277 100644
--- a/drivers/dma/at_hdmac_regs.h
+++ b/drivers/dma/at_hdmac_regs.h
@@ -327,28 +327,27 @@
}
-static void atc_setup_irq(struct at_dma_chan *atchan, int on)
+static void atc_setup_irq(struct at_dma *atdma, int chan_id, int on)
{
- struct at_dma *atdma = to_at_dma(atchan->chan_common.device);
- u32 ebci;
+ u32 ebci;
/* enable interrupts on buffer transfer completion & error */
- ebci = AT_DMA_BTC(atchan->chan_common.chan_id)
- | AT_DMA_ERR(atchan->chan_common.chan_id);
+ ebci = AT_DMA_BTC(chan_id)
+ | AT_DMA_ERR(chan_id);
if (on)
dma_writel(atdma, EBCIER, ebci);
else
dma_writel(atdma, EBCIDR, ebci);
}
-static inline void atc_enable_irq(struct at_dma_chan *atchan)
+static void atc_enable_chan_irq(struct at_dma *atdma, int chan_id)
{
- atc_setup_irq(atchan, 1);
+ atc_setup_irq(atdma, chan_id, 1);
}
-static inline void atc_disable_irq(struct at_dma_chan *atchan)
+static void atc_disable_chan_irq(struct at_dma *atdma, int chan_id)
{
- atc_setup_irq(atchan, 0);
+ atc_setup_irq(atdma, chan_id, 0);
}