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authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2024-11-11 12:16:33 +0100
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2024-11-11 12:16:33 +0100
commit5516200c466f92954551406ea641376963c43a92 (patch)
tree4d9814bad59490d0cde3ce014a8ae08e9a8672db /drivers/usb/gadget/udc/dummy_hcd.c
parent9b47364fd75b5494b716857af62737cdd1bca1b8 (diff)
parent2d5404caa8c7bb5c4e0435f94b28834ae5456623 (diff)
Merge tag 'v6.12-rc7' into __tmp-hansg-linux-tags_media_atomisp_6_13_1
Linux 6.12-rc7 * tag 'v6.12-rc7': (1909 commits) Linux 6.12-rc7 filemap: Fix bounds checking in filemap_read() i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set mailmap: add entry for Thorsten Blum ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove() signal: restore the override_rlimit logic fs/proc: fix compile warning about variable 'vmcore_mmap_ops' ucounts: fix counter leak in inc_rlimit_get_ucounts() selftests: hugetlb_dio: check for initial conditions to skip in the start mm: fix docs for the kernel parameter ``thp_anon=`` mm/damon/core: avoid overflow in damon_feed_loop_next_input() mm/damon/core: handle zero schemes apply interval mm/damon/core: handle zero {aggregation,ops_update} intervals mm/mlock: set the correct prev on failure objpool: fix to make percpu slot allocation more robust mm/page_alloc: keep track of free highatomic bcachefs: Fix UAF in __promote_alloc() error path bcachefs: Change OPT_STR max to be 1 less than the size of choices array bcachefs: btree_cache.freeable list fixes bcachefs: check the invalid parameter for perf test ...
Diffstat (limited to 'drivers/usb/gadget/udc/dummy_hcd.c')
-rw-r--r--drivers/usb/gadget/udc/dummy_hcd.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index ff7bee78bcc4..081ac7683c0b 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -42,7 +42,7 @@
#include <asm/byteorder.h>
#include <linux/io.h>
#include <asm/irq.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#define DRIVER_DESC "USB Host+Gadget Emulator"
#define DRIVER_VERSION "02 May 2005"
@@ -254,6 +254,7 @@ struct dummy_hcd {
u32 stream_en_ep;
u8 num_stream[30 / 2];
+ unsigned timer_pending:1;
unsigned active:1;
unsigned old_active:1;
unsigned resuming:1;
@@ -1303,9 +1304,11 @@ static int dummy_urb_enqueue(
urb->error_count = 1; /* mark as a new urb */
/* kick the scheduler, it'll do the rest */
- if (!hrtimer_active(&dum_hcd->timer))
+ if (!dum_hcd->timer_pending) {
+ dum_hcd->timer_pending = 1;
hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS),
HRTIMER_MODE_REL_SOFT);
+ }
done:
spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
@@ -1324,9 +1327,10 @@ static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
spin_lock_irqsave(&dum_hcd->dum->lock, flags);
rc = usb_hcd_check_unlink_urb(hcd, urb, status);
- if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING &&
- !list_empty(&dum_hcd->urbp_list))
+ if (rc == 0 && !dum_hcd->timer_pending) {
+ dum_hcd->timer_pending = 1;
hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT);
+ }
spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
return rc;
@@ -1813,6 +1817,7 @@ static enum hrtimer_restart dummy_timer(struct hrtimer *t)
/* look at each urb queued by the host side driver */
spin_lock_irqsave(&dum->lock, flags);
+ dum_hcd->timer_pending = 0;
if (!dum_hcd->udev) {
dev_err(dummy_dev(dum_hcd),
@@ -1994,8 +1999,10 @@ return_urb:
if (list_empty(&dum_hcd->urbp_list)) {
usb_put_dev(dum_hcd->udev);
dum_hcd->udev = NULL;
- } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) {
+ } else if (!dum_hcd->timer_pending &&
+ dum_hcd->rh_state == DUMMY_RH_RUNNING) {
/* want a 1 msec delay here */
+ dum_hcd->timer_pending = 1;
hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS),
HRTIMER_MODE_REL_SOFT);
}
@@ -2390,8 +2397,10 @@ static int dummy_bus_resume(struct usb_hcd *hcd)
} else {
dum_hcd->rh_state = DUMMY_RH_RUNNING;
set_link_state(dum_hcd);
- if (!list_empty(&dum_hcd->urbp_list))
+ if (!list_empty(&dum_hcd->urbp_list)) {
+ dum_hcd->timer_pending = 1;
hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT);
+ }
hcd->state = HC_STATE_RUNNING;
}
spin_unlock_irq(&dum_hcd->dum->lock);
@@ -2522,6 +2531,7 @@ static void dummy_stop(struct usb_hcd *hcd)
struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
hrtimer_cancel(&dum_hcd->timer);
+ dum_hcd->timer_pending = 0;
device_remove_file(dummy_dev(dum_hcd), &dev_attr_urbs);
dev_info(dummy_dev(dum_hcd), "stopped\n");
}