From: Andy Shevchenko <andriy.shevchenko@linux•intel.com>
To: Russell Currey <ruscur@russell•cc>,
Sam Bobroff <sbobroff@linux•ibm.com>,
"Oliver O'Halloran" <oohall@gmail•com>,
linuxppc-dev@lists•ozlabs.org,
Bjorn Helgaas <bhelgaas@google•com>,
linux-pci@vger•kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux•intel.com>
Subject: [PATCH v1 1/2] PCI/AER: Use for_each_set_bit()
Date: Tue, 27 Aug 2019 18:18:22 +0300 [thread overview]
Message-ID: <20190827151823.75312-1-andriy.shevchenko@linux.intel.com> (raw)
This simplifies and standardizes slot manipulation code
by using for_each_set_bit() library function.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux•intel.com>
---
drivers/pci/pcie/aer.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index b45bc47d04fe..f883f81d759a 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -15,6 +15,7 @@
#define pr_fmt(fmt) "AER: " fmt
#define dev_fmt pr_fmt
+#include <linux/bitops.h>
#include <linux/cper.h>
#include <linux/pci.h>
#include <linux/pci-acpi.h>
@@ -657,7 +658,8 @@ const struct attribute_group aer_stats_attr_group = {
static void pci_dev_aer_stats_incr(struct pci_dev *pdev,
struct aer_err_info *info)
{
- int status, i, max = -1;
+ unsigned long status = info->status & ~info->mask;
+ int i, max = -1;
u64 *counter = NULL;
struct aer_stats *aer_stats = pdev->aer_stats;
@@ -682,10 +684,8 @@ static void pci_dev_aer_stats_incr(struct pci_dev *pdev,
break;
}
- status = (info->status & ~info->mask);
- for (i = 0; i < max; i++)
- if (status & (1 << i))
- counter[i]++;
+ for_each_set_bit(i, &status, max)
+ counter[i]++;
}
static void pci_rootport_aer_stats_incr(struct pci_dev *pdev,
@@ -717,14 +717,11 @@ static void __print_tlp_header(struct pci_dev *dev,
static void __aer_print_error(struct pci_dev *dev,
struct aer_err_info *info)
{
- int i, status;
+ unsigned long status = info->status & ~info->mask;
const char *errmsg = NULL;
- status = (info->status & ~info->mask);
-
- for (i = 0; i < 32; i++) {
- if (!(status & (1 << i)))
- continue;
+ int i;
+ for_each_set_bit(i, &status, 32) {
if (info->severity == AER_CORRECTABLE)
errmsg = i < ARRAY_SIZE(aer_correctable_error_string) ?
aer_correctable_error_string[i] : NULL;
--
2.23.0.rc1
next reply other threads:[~2019-08-27 15:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-27 15:18 Andy Shevchenko [this message]
2019-08-27 15:18 ` [PATCH v1 2/2] PCI/AER: Update parameter descriptions to satisfy kernel-doc validator Andy Shevchenko
2019-08-27 17:06 ` Kuppuswamy Sathyanarayanan
2019-08-28 10:07 ` Andy Shevchenko
2019-08-27 17:06 ` [PATCH v1 1/2] PCI/AER: Use for_each_set_bit() Kuppuswamy Sathyanarayanan
2019-09-27 10:44 ` Bjorn Helgaas
2019-09-27 12:39 ` Bjorn Helgaas
2019-09-30 12:13 ` Andy Shevchenko
2019-10-02 10:27 ` David Howells
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