Replacing n & (n - 1) for power of 2 check by is_power_of_2(n)
Signed-off-by: vignesh babu <[email protected]>
---
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 37c00f6..19a64a3 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -17,6 +17,7 @@
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/string.h>
+#include <linux/log2.h>
#include <asm/dma.h> /* isa_dma_bridge_buggy */
#include "pci.h"
@@ -1454,7 +1455,7 @@ int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc)
int cap, err = -EINVAL;
u32 stat, cmd, v, o;
- if (mmrbc < 512 || mmrbc > 4096 || (mmrbc & (mmrbc-1)))
+ if (mmrbc < 512 || mmrbc > 4096 || !is_power_of_2(mmrbc))
goto out;
v = ffs(mmrbc) - 10;
@@ -1526,7 +1527,7 @@ int pcie_set_readrq(struct pci_dev *dev, int rq)
int cap, err = -EINVAL;
u16 ctl, v;
- if (rq < 128 || rq > 4096 || (rq & (rq-1)))
+ if (rq < 128 || rq > 4096 || !is_power_of_2(rq))
goto out;
v = (ffs(rq) - 8) << 12;
--
Vignesh Babu BM
_____________________________________________________________
"Why is it that every time I'm with you, makes me believe in magic?"
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