diff options
| author | Adrian Huang <ahuang12@lenovo.com> | 2014-02-27 15:26:03 +0400 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2014-03-07 01:46:55 +0400 |
| commit | 7969943789df1196faa9ba67518d83fd93e4f9f6 (patch) | |
| tree | 31dd1b643e8e53ae5c0ba540ac525c8dba1f4266 /include/linux/usb.h | |
| parent | bcffae7708eb8352f44dc510b326541fe43a02a4 (diff) | |
| download | linux-7969943789df1196faa9ba67518d83fd93e4f9f6.tar.xz | |
xhci: add the meaningful IRQ description if it is empty
When some xHCI host controllers fall back to use the legacy IRQ,
the member irq_descr of the usb_hcd structure will be empty. This
leads to the empty string of the xHCI host controller in
/proc/interrupts. Here is the example (The irq 19 is the xHCI host
controller):
CPU0
0: 91 IO-APIC-edge timer
8: 1 IO-APIC-edge rtc0
9: 7191 IO-APIC-fasteoi acpi
18: 104 IR-IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2
19: 473 IR-IO-APIC-fasteoi
After applying the patch, the name of the registered xHCI host
controller can be displayed correctly. Here is the example:
CPU0
0: 91 IO-APIC-edge timer
8: 1 IO-APIC-edge rtc0
9: 7191 IO-APIC-fasteoi acpi
18: 104 IR-IO-APIC-fasteoi ehci_hcd:usb1, ehci_hcd:usb2
19: 473 IR-IO-APIC-fasteoi xhci_hcd:usb3
Tested on v3.14-rc4.
Signed-off-by: Adrian Huang <ahuang12@lenovo.com>
Reviewed-by: Nagananda Chumbalkar <nchumbalkar@lenovo.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'include/linux/usb.h')
0 files changed, 0 insertions, 0 deletions