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thunderbolt: Rename shadowed variables bit to interrupt_bit and auto_clear_bit

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cppcheck reports
drivers/thunderbolt/nhi.c:74:7: style: Local variable 'bit' shadows outer variable [shadowVariable]
  int bit;
      ^
drivers/thunderbolt/nhi.c:66:6: note: Shadowed declaration
 int bit = ring_interrupt_index(ring) & 31;
     ^
drivers/thunderbolt/nhi.c:74:7: note: Shadow variable
  int bit;
      ^
For readablity rename the outer to interrupt_bit and the innner
to auto_clear_bit.

Fixes: 468c49f447 ("thunderbolt: Disable interrupt auto clear for ring")
Cc: stable@vger.kernel.org
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Tom Rix 2023-03-15 18:04:50 -04:00 committed by Mika Westerberg
parent 468c49f447
commit 58cdfe6f58
1 changed files with 9 additions and 8 deletions
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17
drivers/thunderbolt/nhi.c
View File

@ -63,15 +63,15 @@ static void ring_interrupt_active(struct tb_ring *ring, bool active)
{
int reg = REG_RING_INTERRUPT_BASE +
ring_interrupt_index(ring) / 32 * 4;
int bit = ring_interrupt_index(ring) & 31;
int mask = 1 << bit;
int interrupt_bit = ring_interrupt_index(ring) & 31;
int mask = 1 << interrupt_bit;
u32 old, new;
if (ring->irq > 0) {
u32 step, shift, ivr, misc;
void __iomem *ivr_base;
int auto_clear_bit;
int index;
int bit;
if (ring->is_tx)
index = ring->hop;
@ -91,11 +91,12 @@ static void ring_interrupt_active(struct tb_ring *ring, bool active)
*/
misc = ioread32(ring->nhi->iobase + REG_DMA_MISC);
if (ring->nhi->quirks & QUIRK_AUTO_CLEAR_INT)
bit = REG_DMA_MISC_INT_AUTO_CLEAR;
auto_clear_bit = REG_DMA_MISC_INT_AUTO_CLEAR;
else
bit = REG_DMA_MISC_DISABLE_AUTO_CLEAR;
if (!(misc & bit))
iowrite32(misc | bit, ring->nhi->iobase + REG_DMA_MISC);
auto_clear_bit = REG_DMA_MISC_DISABLE_AUTO_CLEAR;
if (!(misc & auto_clear_bit))
iowrite32(misc | auto_clear_bit,
ring->nhi->iobase + REG_DMA_MISC);
ivr_base = ring->nhi->iobase + REG_INT_VEC_ALLOC_BASE;
step = index / REG_INT_VEC_ALLOC_REGS * REG_INT_VEC_ALLOC_BITS;
@ -115,7 +116,7 @@ static void ring_interrupt_active(struct tb_ring *ring, bool active)
dev_dbg(&ring->nhi->pdev->dev,
"%s interrupt at register %#x bit %d (%#x -> %#x)\n",
active ? "enabling" : "disabling", reg, bit, old, new);
active ? "enabling" : "disabling", reg, interrupt_bit, old, new);
if (new == old)
dev_WARN(&ring->nhi->pdev->dev,