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authorSuman Anna <s-anna@ti.com>2014-07-02 18:00:59 -0500
committerOhad Ben-Cohen <ohad@wizery.com>2014-07-29 11:46:25 +0300
commite1e4528f8c99624494043597859e7f9421832833 (patch)
tree2491adc13e640f56c6748c93a06b8e4c65025fc9 /Documentation/trace
parent9a3c4145af32125c5ee39c0272662b47307a8323 (diff)
hwspinlock/omap: enable module before reading SYSSTATUS register
The number of hwspinlocks are determined based on the value read from the IP block's SYSSTATUS register. However, the module may not be enabled and clocked, and the read may result in a bus error. This particular issue is seen rather easily on AM33XX, since the module wakeup is software controlled, and it is disabled out of reset. Make sure the module is enabled and clocked before reading the SYSSTATUS register. Signed-off-by: Suman Anna <s-anna@ti.com> [replace pm_runtime_put_sync with lenient pm_runtime_put] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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