[PATCH] ste_dma40: simplify d40_handle_interrupt()
Yury Norov
yury.norov at gmail.com
Sat Jul 19 19:21:28 PDT 2025
From: Yury Norov (NVIDIA) <yury.norov at gmail.com>
Use for_each_set_bit() iterator and drop housekeeping code.
Signed-off-by: Yury Norov (NVIDIA) <yury.norov at gmail.com>
---
drivers/dma/ste_dma40.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index d52e1685aed5..6cc76f935c7c 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -1664,7 +1664,7 @@ static irqreturn_t d40_handle_interrupt(int irq, void *data)
int i;
u32 idx;
u32 row;
- long chan = -1;
+ long chan;
struct d40_chan *d40c;
struct d40_base *base = data;
u32 *regs = base->regs_interrupt;
@@ -1677,15 +1677,7 @@ static irqreturn_t d40_handle_interrupt(int irq, void *data)
for (i = 0; i < il_size; i++)
regs[i] = readl(base->virtbase + il[i].src);
- for (;;) {
-
- chan = find_next_bit((unsigned long *)regs,
- BITS_PER_LONG * il_size, chan + 1);
-
- /* No more set bits found? */
- if (chan == BITS_PER_LONG * il_size)
- break;
-
+ for_each_set_bit(chan, (unsigned long *)regs, BITS_PER_LONG * il_size) {
row = chan / BITS_PER_LONG;
idx = chan & (BITS_PER_LONG - 1);
--
2.43.0
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