[PATCH v1 5/6] dmaengine: ioat: use sysfs_emit() in per-channel sysfs show()
From: Logan Gunthorpe
Date: Fri Jul 17 2026 - 18:20:14 EST
Convert the sprintf() calls in the per-channel sysfs attribute show()
functions to sysfs_emit().
Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
---
drivers/dma/ioat/sysfs.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/dma/ioat/sysfs.c b/drivers/dma/ioat/sysfs.c
index e796ddb5383f..976134df8108 100644
--- a/drivers/dma/ioat/sysfs.c
+++ b/drivers/dma/ioat/sysfs.c
@@ -24,12 +24,12 @@ static ssize_t cap_show(struct dma_chan *c, char *page)
{
struct dma_device *dma = c->device;
- return sprintf(page, "copy%s%s%s%s%s\n",
- dma_has_cap(DMA_PQ, dma->cap_mask) ? " pq" : "",
- dma_has_cap(DMA_PQ_VAL, dma->cap_mask) ? " pq_val" : "",
- dma_has_cap(DMA_XOR, dma->cap_mask) ? " xor" : "",
- dma_has_cap(DMA_XOR_VAL, dma->cap_mask) ? " xor_val" : "",
- dma_has_cap(DMA_INTERRUPT, dma->cap_mask) ? " intr" : "");
+ return sysfs_emit(page, "copy%s%s%s%s%s\n",
+ dma_has_cap(DMA_PQ, dma->cap_mask) ? " pq" : "",
+ dma_has_cap(DMA_PQ_VAL, dma->cap_mask) ? " pq_val" : "",
+ dma_has_cap(DMA_XOR, dma->cap_mask) ? " xor" : "",
+ dma_has_cap(DMA_XOR_VAL, dma->cap_mask) ? " xor_val" : "",
+ dma_has_cap(DMA_INTERRUPT, dma->cap_mask) ? " intr" : "");
}
static const struct ioat_sysfs_entry ioat_cap_attr = __ATTR_RO(cap);
@@ -39,8 +39,8 @@ static ssize_t version_show(struct dma_chan *c, char *page)
struct dma_device *dma = c->device;
struct ioatdma_device *ioat_dma = to_ioatdma_device(dma);
- return sprintf(page, "%d.%d\n",
- ioat_dma->version >> 4, ioat_dma->version & 0xf);
+ return sysfs_emit(page, "%d.%d\n",
+ ioat_dma->version >> 4, ioat_dma->version & 0xf);
}
static const struct ioat_sysfs_entry ioat_version_attr = __ATTR_RO(version);
@@ -118,7 +118,7 @@ static ssize_t ring_size_show(struct dma_chan *c, char *page)
{
struct ioatdma_chan *ioat_chan = to_ioat_chan(c);
- return sprintf(page, "%d\n", (1 << ioat_chan->alloc_order) & ~1);
+ return sysfs_emit(page, "%d\n", (1 << ioat_chan->alloc_order) & ~1);
}
static const struct ioat_sysfs_entry ring_size_attr = __ATTR_RO(ring_size);
@@ -127,7 +127,7 @@ static ssize_t ring_active_show(struct dma_chan *c, char *page)
struct ioatdma_chan *ioat_chan = to_ioat_chan(c);
/* ...taken outside the lock, no need to be precise */
- return sprintf(page, "%d\n", ioat_ring_active(ioat_chan));
+ return sysfs_emit(page, "%d\n", ioat_ring_active(ioat_chan));
}
static const struct ioat_sysfs_entry ring_active_attr = __ATTR_RO(ring_active);
@@ -135,7 +135,7 @@ static ssize_t intr_coalesce_show(struct dma_chan *c, char *page)
{
struct ioatdma_chan *ioat_chan = to_ioat_chan(c);
- return sprintf(page, "%d\n", ioat_chan->intr_coalesce);
+ return sysfs_emit(page, "%d\n", ioat_chan->intr_coalesce);
}
static ssize_t intr_coalesce_store(struct dma_chan *c, const char *page,
--
2.47.3