This patch series provides fix for UDC driver running on SMP Samsung SoCs.
In detail, it replaces per EP spinlock with one spinlock for the whole hsotg driver.
Afterwards cleanup and spinlock reorganization has been done. The most notable change
is to add the spinlock protection to the s3c-hsotg IRQ handler routine.
Due to that there is a protection from entering interrupt raised by one core when the
other one is for example issuing usb request from usb gadget.
Moreover udc_stop function is now spinlock protected.
Test HW:
- S5PC110 (GONI) - UMP
- Exynos4210 rev.1 (NURI) - SMP
Lukasz Majewski (3):
usb:hsotg:samsung: Replace endpoint specific locks with a global lock
usb:hsotg:samsung: Protect the udc_stop routine with spinlock
usb:hsotg:samsung:smp Provide *_lock functions abstraction layer for
SMP SoCs
drivers/usb/gadget/s3c-hsotg.c | 130 +++++++++++++++++++++-------------------
1 files changed, 68 insertions(+), 62 deletions(-)
--
1.7.2.3
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