kernel/drivers/misc/mei, branch linux-4.1.y

mei: remove dev_err message on an unsupported ioctl

2018-05-23T01:33:57Z

[ Upstream commit bb0829a741792b56c908d7745bc0b2b540293bcc ] Currently the driver spams the kernel log on unsupported ioctls which is unnecessary as the ioctl returns -ENOIOCTLCMD to indicate this anyway. I suspect this was originally for debugging purposes but it really is not required so remove it. Signed-off-by: Colin Ian King Cc: stable Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

mei: txe: don't clean an unprocessed interrupt cause.

2016-11-24T01:59:49Z

[ Upstream commit 43605e293eb13c07acb546c14f407a271837af17 ] SEC registers are not accessible when the TXE device is in low power state, hence the SEC interrupt cannot be processed if device is not awake. In some rare cases entrance to low power state (aliveness off) and input ready bits can be signaled at the same time, resulting in communication stall as input ready won't be signaled again after waking up. To resolve this IPC_HHIER_SEC bit in HHISR_REG should not be cleaned if the interrupt is not processed. Cc: stable@vger.kernel.org Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

Revert "mei: bus: move driver api functions at the start of the file"

2016-05-08T12:08:56Z

This reverts commit 79b768dec5d354aeb143f51db11e0cbb758176fb. Signed-off-by: Sasha Levin

mei: bus: move driver api functions at the start of the file

2016-04-18T12:50:35Z

[ Upstream commit 6238299774377b12c3e24507b100b2687eb5ea32 ] To make the file more organize move mei client driver api to the start of the file and add Kdoc. There are no functional changes in this patch. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

mei: prevent unloading mei hw modules while the device is opened.

2015-08-10T19:21:57Z

commit 154322f47376fed6ab1e4b350aa45fffa15a61aa upstream. chrdev_open() increases reference counter on cdev->owner. Instead of assigning the owner to mei subsystem, the owner has to be set to the underlaying HW module (mei_me or mei_txe), so once the device is opened the HW module cannot be unloaded. Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin Signed-off-by: Greg Kroah-Hartman

mei: txe: reduce suspend/resume time

2015-07-21T17:10:03Z

commit fe292283c23329218e384bffc6cb4bfa3fd92277 upstream. HW has to be in known state before the initialisation sequence is started. The polling step for settling aliveness was set to 200ms while in practise this can be done in up to 30msecs. Signed-off-by: Tomas Winkler Signed-off-by: Barak Yoresh Signed-off-by: Greg Kroah-Hartman

mei: me: wait for power gating exit confirmation

2015-07-21T17:10:03Z

commit 3dc196eae1db548f05e53e5875ff87b8ff79f249 upstream. Fix the hbm power gating state machine so it will wait till it receives confirmation interrupt for the PG_ISOLATION_EXIT message. In process of the suspend flow the devices first have to exit from the power gating state (runtime pm resume). If we do not handle the confirmation interrupt after sending PG_ISOLATION_EXIT message, we may receive it already after the suspend flow has changed the device state and interrupt will be interpreted as a spurious event, consequently link reset will be invoked which will prevent the device from completing the suspend flow kernel: [6603] mei_reset:136: mei_me 0000:00:16.0: powering down: end of reset kernel: [476] mei_me_irq_thread_handler:643: mei_me 0000:00:16.0: function called after ISR to handle the interrupt processing. kernel: mei_me 0000:00:16.0: FW not ready: resetting Cc: Gabriele Mazzotta Link: https://bugzilla.kernel.org/show_bug.cgi?id=86241 Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=770397 Tested-by: Gabriele Mazzotta Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2015-04-21T16:42:58Z

Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver patchset for 4.1-rc1. Lots of different driver subsystem updates here, nothing major, full details are in the shortlog. All of this has been in linux-next for a while" * tag 'char-misc-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (133 commits) mei: trace: remove unused TRACE_SYSTEM_STRING DTS: ARM: OMAP3-N900: Add lis3lv02d support Documentation: DT: lis302: update wakeup binding lis3lv02d: DT: add wakeup unit 2 and wakeup threshold lis3lv02d: DT: use s32 to support negative values Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case Drivers: hv: hv_balloon: correctly handle val.freeram

mei: trace: remove unused TRACE_SYSTEM_STRING

2015-04-13T13:27:19Z

fix warning: include/trace/ftrace.h:28:0: note: this is the location of the previous definition ^ In file included from include/trace/define_trace.h:90:0, from drivers/misc/mei/mei-trace.h:76, from drivers/misc/mei/mei-trace.c:21: include/trace/ftrace.h:28:0: warning: "TRACE_SYSTEM_STRING" redefined Cc: Stephen Rothwell Reported-by: Stephen Rothwell Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

Merge branch 'iocb' into for-next

2015-04-12T02:24:41Z