From: David S. Miller Date: Tue, 25 Feb 2014 00:38:53 +0000 (-0500) Subject: Merge branch 'gianfar' X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=432c5b3a108c7e5185e34c4f25dc61824740c21d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git Merge branch 'gianfar' Claudiu Manoil says: ==================== gianfar: Device reset and reconfig fixes These patches end up fixing some notable device reset & reconfig related problems. One issue is on-the-fly (Rx/Tx on) programming of interrupt coalescing (IC) registers on the processing path, against HW recommendation. This is an old issue that became visible after BQL introduction, as under certain conditions (low traffic) one TX interrupt gets lost and BQL fires Tx timeout as a result. Another notable issue is a race on the Tx path (xmit, clean_tx) during device reset (i.e. during Tx timeout watchdog firing) that leads to NULL access. Fixing the problematic on-thy-fly register writes (i.e. the IC regs) required the implementation of a MAC soft reset procedure. The race leading to NULL access was addressed by fixing the stop_gfar()/startup_gfar() pair (disable/enable napi a.s.o.) and adding the device state DOWN to sync with the TX path. v2: Refactored if() clauses from gfar_set_features(), PATCH 2. ==================== Signed-off-by: David S. Miller --- 432c5b3a108c7e5185e34c4f25dc61824740c21d