Return int to indicate that the source device is found or not.
This allows us to skip calling aer_process_err_devices() if we can.
And move dev_printk for debug into this function.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@xxxxxxxxxxxxxx>
---
drivers/pci/pcie/aer/aerdrv_core.c | 28 ++++++++++++++++------------
1 files changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index fa3ff4a..1feb725 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -248,11 +248,13 @@ added:
/**
* find_source_device - search through device hierarchy for source device
* @parent: pointer to Root Port pci_dev data structure
- * @err_info: including detailed error information such like id
+ * @e_info: including detailed error information such like id
*
- * Invoked when error is detected at the Root Port.
+ * Return 1 if found, otherwise 0.
+ *
+ * Invoked by DPC when error is detected at the Root Port.
*/
-static void find_source_device(struct pci_dev *parent,
+static int find_source_device(struct pci_dev *parent,
struct aer_err_info *e_info)
{
struct pci_dev *dev = parent;
@@ -261,9 +263,17 @@ static void find_source_device(struct pci_dev *parent,
/* Is Root Port an agent that sends error message? */
result = find_device_iter(dev, e_info);
if (result)
- return;
+ return 1;
pci_walk_bus(parent->subordinate, find_device_iter, e_info);
+
+ if (!e_info->error_dev_num) {
+ dev_printk(KERN_DEBUG, &parent->dev,
+ "can't find device of ID%04x\n",
+ e_info->id);
+ return 0;
+ }
+ return 1;
}
static int report_error_detected(struct pci_dev *dev, void *data)
@@ -745,12 +755,6 @@ static inline void aer_process_err_devices(struct pcie_device *p_device,
{
int i;
- if (!e_info->dev[0]) {
- dev_printk(KERN_DEBUG, &p_device->port->dev,
- "can't find device of ID%04x\n",
- e_info->id);
- }
-
/* Report all before handle them, not to lost records by reset etc. */
for (i = 0; i < e_info->error_dev_num && e_info->dev[i]; i++) {
if (get_device_error_info(e_info->dev[i], e_info))
@@ -808,8 +812,8 @@ static void aer_isr_one_error(struct pcie_device *p_device,
aer_print_port_info(p_device->port, e_info);
- find_source_device(p_device->port, e_info);
- aer_process_err_devices(p_device, e_info);
+ if (find_source_device(p_device->port, e_info))
+ aer_process_err_devices(p_device, e_info);
}
kfree(e_info);
--
1.7.0.4
--
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