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authorAndrew Morton <akpm@linux-foundation.org>2008-04-29 00:59:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:05 -0700
commita7133a15587b8921af8b074e0d3fe1606cbe5597 (patch)
tree129706734260468ac6aac966584ffeca31adf471 /lib
parent9a3be324e3d9da08219d81d6765f445a726cf962 (diff)
lib/swiotlb.c: cleanups
There's a pointlessly braced block of code in there. Remove the braces and save a tabstop. Cc: Andi Kleen <ak@suse.de> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jan Beulich <jbeulich@novell.com> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/swiotlb.c89
1 files changed, 43 insertions, 46 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 025922807e6e..256c8445e54d 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -331,56 +331,53 @@ map_single(struct device *hwdev, char *buffer, size_t size, int dir)
* request and allocate a buffer from that IO TLB pool.
*/
spin_lock_irqsave(&io_tlb_lock, flags);
- {
- index = ALIGN(io_tlb_index, stride);
- if (index >= io_tlb_nslabs)
- index = 0;
- wrap = index;
-
- do {
- while (is_span_boundary(index, nslots, offset_slots,
- max_slots)) {
- index += stride;
- if (index >= io_tlb_nslabs)
- index = 0;
- if (index == wrap)
- goto not_found;
- }
-
- /*
- * If we find a slot that indicates we have 'nslots'
- * number of contiguous buffers, we allocate the
- * buffers from that slot and mark the entries as '0'
- * indicating unavailable.
- */
- if (io_tlb_list[index] >= nslots) {
- int count = 0;
-
- for (i = index; i < (int) (index + nslots); i++)
- io_tlb_list[i] = 0;
- for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) && io_tlb_list[i]; i--)
- io_tlb_list[i] = ++count;
- dma_addr = io_tlb_start + (index << IO_TLB_SHIFT);
-
- /*
- * Update the indices to avoid searching in
- * the next round.
- */
- io_tlb_index = ((index + nslots) < io_tlb_nslabs
- ? (index + nslots) : 0);
-
- goto found;
- }
+ index = ALIGN(io_tlb_index, stride);
+ if (index >= io_tlb_nslabs)
+ index = 0;
+ wrap = index;
+
+ do {
+ while (is_span_boundary(index, nslots, offset_slots,
+ max_slots)) {
index += stride;
if (index >= io_tlb_nslabs)
index = 0;
- } while (index != wrap);
+ if (index == wrap)
+ goto not_found;
+ }
- not_found:
- spin_unlock_irqrestore(&io_tlb_lock, flags);
- return NULL;
- }
- found:
+ /*
+ * If we find a slot that indicates we have 'nslots' number of
+ * contiguous buffers, we allocate the buffers from that slot
+ * and mark the entries as '0' indicating unavailable.
+ */
+ if (io_tlb_list[index] >= nslots) {
+ int count = 0;
+
+ for (i = index; i < (int) (index + nslots); i++)
+ io_tlb_list[i] = 0;
+ for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE - 1) && io_tlb_list[i]; i--)
+ io_tlb_list[i] = ++count;
+ dma_addr = io_tlb_start + (index << IO_TLB_SHIFT);
+
+ /*
+ * Update the indices to avoid searching in the next
+ * round.
+ */
+ io_tlb_index = ((index + nslots) < io_tlb_nslabs
+ ? (index + nslots) : 0);
+
+ goto found;
+ }
+ index += stride;
+ if (index >= io_tlb_nslabs)
+ index = 0;
+ } while (index != wrap);
+
+not_found:
+ spin_unlock_irqrestore(&io_tlb_lock, flags);
+ return NULL;
+found:
spin_unlock_irqrestore(&io_tlb_lock, flags);
/*

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