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USB: usbfs: Add a capability flag for runtime suspend

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The recent commit 7794f486ed ("usbfs: Add ioctls for runtime power
management") neglected to add a corresponding capability flag.  This
patch rectifies the omission.

Signed-off-by: Alan Stern <[email protected]>
CC: Mayuresh Kulkarni <[email protected]>

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Alan Stern authored and Greg Kroah-Hartman committed 2019-08-14 16:52:13 +02:00
1 parent 115f3bad1a
commit 4ed3350539
2 files changed
+9 -1
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drivers/usb/core/devio.c
+8 -1
View File
@@ -44,6 +44,12 @@
#include "usb.h"
#ifdef CONFIG_PM
#define MAYBE_CAP_SUSPEND USBDEVFS_CAP_SUSPEND
#else
#define MAYBE_CAP_SUSPEND 0
#endif
#define USB_MAXBUS 64
#define USB_DEVICE_MAX (USB_MAXBUS * 128)
#define USB_SG_SIZE 16384 /* split-size for large txs */
@@ -2310,7 +2316,8 @@ static int proc_get_capabilities(struct usb_dev_state *ps, void __user *arg)
caps = USBDEVFS_CAP_ZERO_PACKET | USBDEVFS_CAP_NO_PACKET_SIZE_LIM |
USBDEVFS_CAP_REAP_AFTER_DISCONNECT | USBDEVFS_CAP_MMAP |
USBDEVFS_CAP_DROP_PRIVILEGES | USBDEVFS_CAP_CONNINFO_EX;
USBDEVFS_CAP_DROP_PRIVILEGES |
USBDEVFS_CAP_CONNINFO_EX | MAYBE_CAP_SUSPEND;
if (!ps->dev->bus->no_stop_on_short)
caps |= USBDEVFS_CAP_BULK_CONTINUATION;
if (ps->dev->bus->sg_tablesize)
include/uapi/linux/usbdevice_fs.h
+1
View File
@@ -158,6 +158,7 @@ struct usbdevfs_hub_portinfo {
#define USBDEVFS_CAP_MMAP 0x20
#define USBDEVFS_CAP_DROP_PRIVILEGES 0x40
#define USBDEVFS_CAP_CONNINFO_EX 0x80
#define USBDEVFS_CAP_SUSPEND 0x100
/* USBDEVFS_DISCONNECT_CLAIM flags & struct */