PCI: fix AER driver error information
Below patch fixes aer driver error information and enables aer driver
although CONFIG_ACPI=n.
As a matter of fact, the new patch is created from below 2 patches plus
a minor patch apply fuzz fixing. Because the second patch fixed a compilation
error introduced by the first patch, I merge them to facilitate bisect.
1) http://marc.info/?l=linux-kernel&m=117783233918191&w=2;
2) http://marc.info/?l=linux-mm-commits&m=118046936720790&w=2
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index b5ac810..c806249 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -55,8 +55,6 @@
status = acpi_evaluate_object(handle, "_OSC", &input, &output);
if (ACPI_FAILURE (status)) {
- printk(KERN_DEBUG
- "Evaluate _OSC Set fails. Status = 0x%04x\n", status);
*ret_status = status;
return status;
}
@@ -124,11 +122,9 @@
in_params[3].buffer.pointer = (u8 *)context;
status = acpi_evaluate_object(handle, "_OSC", &input, &output);
- if (ACPI_FAILURE (status)) {
- printk(KERN_DEBUG
- "Evaluate _OSC Set fails. Status = 0x%04x\n", status);
+ if (ACPI_FAILURE (status))
return status;
- }
+
out_obj = output.pointer;
if (out_obj->type != ACPI_TYPE_BUFFER) {
printk(KERN_DEBUG
diff --git a/drivers/pci/pcie/aer/Kconfig b/drivers/pci/pcie/aer/Kconfig
index 3f37a60..c3bde58 100644
--- a/drivers/pci/pcie/aer/Kconfig
+++ b/drivers/pci/pcie/aer/Kconfig
@@ -4,7 +4,7 @@
config PCIEAER
boolean "Root Port Advanced Error Reporting support"
- depends on PCIEPORTBUS && ACPI
+ depends on PCIEPORTBUS
default y
help
This enables PCI Express Root Port Advanced Error Reporting
diff --git a/drivers/pci/pcie/aer/Makefile b/drivers/pci/pcie/aer/Makefile
index 15a4f40..8da3bd8 100644
--- a/drivers/pci/pcie/aer/Makefile
+++ b/drivers/pci/pcie/aer/Makefile
@@ -4,5 +4,6 @@
obj-$(CONFIG_PCIEAER) += aerdriver.o
-aerdriver-objs := aerdrv_errprint.o aerdrv_core.o aerdrv.o aerdrv_acpi.o
+aerdriver-objs := aerdrv_errprint.o aerdrv_core.o aerdrv.o
+aerdriver-$(CONFIG_ACPI) += aerdrv_acpi.o
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
index 5cca394..c7ad68b 100644
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ b/drivers/pci/pcie/aer/aerdrv.h
@@ -19,10 +19,6 @@
#define AER_ERROR_MASK 0x001fffff
#define AER_ERROR(d) (d & AER_ERROR_MASK)
-#define OSC_METHOD_RUN_SUCCESS 0
-#define OSC_METHOD_NOT_SUPPORTED 1
-#define OSC_METHOD_RUN_FAILURE 2
-
/* Root Error Status Register Bits */
#define ROOT_ERR_STATUS_MASKS 0x0f
@@ -121,6 +117,14 @@
extern int aer_init(struct pcie_device *dev);
extern void aer_isr(struct work_struct *work);
extern void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
-extern int aer_osc_setup(struct pci_dev *dev);
+
+#ifdef CONFIG_ACPI
+extern int aer_osc_setup(struct pcie_device *pciedev);
+#else
+static inline int aer_osc_setup(struct pcie_device *pciedev)
+{
+ return 0;
+}
+#endif
#endif //_AERDRV_H_
diff --git a/drivers/pci/pcie/aer/aerdrv_acpi.c b/drivers/pci/pcie/aer/aerdrv_acpi.c
index fa68e89..1a1eb45 100644
--- a/drivers/pci/pcie/aer/aerdrv_acpi.c
+++ b/drivers/pci/pcie/aer/aerdrv_acpi.c
@@ -20,19 +20,18 @@
/**
* aer_osc_setup - run ACPI _OSC method
+ * @pciedev: pcie_device which AER is being enabled on
*
- * Return:
- * Zero if success. Nonzero for otherwise.
+ * @return: Zero on success. Nonzero otherwise.
*
* Invoked when PCIE bus loads AER service driver. To avoid conflict with
* BIOS AER support requires BIOS to yield AER control to OS native driver.
**/
-int aer_osc_setup(struct pci_dev *dev)
+int aer_osc_setup(struct pcie_device *pciedev)
{
- int retval = OSC_METHOD_RUN_SUCCESS;
- acpi_status status;
- acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
- struct pci_dev *pdev = dev;
+ acpi_status status = AE_NOT_FOUND;
+ struct pci_dev *pdev = pciedev->port;
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&pdev->dev);
struct pci_bus *parent;
while (!handle) {
@@ -50,19 +49,20 @@
pdev = parent->self;
}
- if (!handle)
- return OSC_METHOD_NOT_SUPPORTED;
-
- pci_osc_support_set(OSC_EXT_PCI_CONFIG_SUPPORT);
- status = pci_osc_control_set(handle, OSC_PCI_EXPRESS_AER_CONTROL |
- OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
- if (ACPI_FAILURE(status)) {
- if (status == AE_SUPPORT)
- retval = OSC_METHOD_NOT_SUPPORTED;
- else
- retval = OSC_METHOD_RUN_FAILURE;
+ if (handle) {
+ pci_osc_support_set(OSC_EXT_PCI_CONFIG_SUPPORT);
+ status = pci_osc_control_set(handle,
+ OSC_PCI_EXPRESS_AER_CONTROL |
+ OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
}
- return retval;
-}
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_DEBUG "AER service couldn't init device %s - %s\n",
+ pciedev->device.bus_id,
+ (status == AE_SUPPORT || status == AE_NOT_FOUND) ?
+ "no _OSC support" : "Run ACPI _OSC fails");
+ return -1;
+ }
+ return 0;
+}
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index 08e1303..fef159a 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -22,8 +22,6 @@
#include <linux/errno.h>
#include <linux/pm.h>
#include <linux/suspend.h>
-#include <linux/acpi.h>
-#include <linux/pci-acpi.h>
#include <linux/delay.h>
#include "aerdrv.h"
@@ -733,20 +731,8 @@
**/
int aer_init(struct pcie_device *dev)
{
- int status;
-
- /* Run _OSC Method */
- status = aer_osc_setup(dev->port);
-
- if(status != OSC_METHOD_RUN_SUCCESS) {
- printk(KERN_DEBUG "%s: AER service init fails - %s\n",
- __FUNCTION__,
- (status == OSC_METHOD_NOT_SUPPORTED) ?
- "No ACPI _OSC support" : "Run ACPI _OSC fails");
-
- if (!forceload)
- return status;
- }
+ if (aer_osc_setup(dev) && !forceload)
+ return -ENXIO;
return AER_SUCCESS;
}
