[PATCH] Gadget: race between ffs_epfile_io() and ffs_func_eps_disable()

ffs_epfile_io() is called from userspace, while ffs_func_esp_disable() might be called from USB disconnect interrupt, the two functions would run in parallel but they are not well protected, that epfile->ep would be removed by ffs_func_esp_disable() during ffs_epfile_io() is referring this

[PATCH] Gadget: race between ffs_epfile_io() and ffs_func_eps_disable()

rom 772c1c9ef451a9a84e48acf14ba613328920a2f4 Mon Sep 17 00:00:00 2001 From: channing Date: Wed, 2 Apr 2014 16:37:57 +0800 Subject: [PATCH] Gadget: race between ffs_epfile_io() and ffs_func_eps_disable() ffs_epfile_io() is called from userspace, while ffs_func_esp_disable() might be called from USB disconnect interr

[PATCH] Gadget: race between ffs_epfile_io() and ffs_func_eps_disable()

772c1c9ef451a9a84e48acf14ba613328920a2f4 Mon Sep 17 00:00:00 2001 From: channing chao...@intel.com Date: Wed, 2 Apr 2014 16:37:57 +0800 Subject: [PATCH] Gadget: race between ffs_epfile_io() and ffs_func_eps_disable() ffs_epfile_io() is called from userspace, while ffs_func_esp_disable() might be called from USB

[PATCH] Gadget: race between ffs_epfile_io() and ffs_func_eps_disable()

ffs_epfile_io() is called from userspace, while ffs_func_esp_disable() might be called from USB disconnect interrupt, the two functions would run in parallel but they are not well protected, that epfile-ep would be removed by ffs_func_esp_disable() during ffs_epfile_io() is referring this