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From: paul@pwsan.com (Paul Walmsley)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 03/11] OMAP: hwmod: Fix omap_hwmod_reset wrong state test
Date: Tue, 21 Sep 2010 10:34:45 -0600	[thread overview]
Message-ID: <20100921163444.20258.66902.stgit@twilight.localdomain> (raw)
In-Reply-To: <20100921163021.20258.87587.stgit@twilight.localdomain>

From: Liam Girdwood <lrg@slimlogic.co.uk>

The reset function wrongly used the state flag as a bit mask and was trying
to re-enable after a reset.

hwmod is still enabled for the PRCM point of view after a softreset
so there is no need to re-enable.

Remove the state check from omap_hwmod_reset since the _reset
function is checking that as well and in addition can generate
a warning

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
[b-cousson at ti.com: remove the wrong test, remove the re-enable]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Rajendra Nayak <rnayak@ti.com>
---
 arch/arm/mach-omap2/omap_hwmod.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 5bb25e3..100115f 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1434,19 +1434,17 @@ void omap_hwmod_ocp_barrier(struct omap_hwmod *oh)
  *
  * Under some conditions, a driver may wish to reset the entire device.
  * Called from omap_device code.  Returns -EINVAL on error or passes along
- * the return value from _reset()/_enable().
+ * the return value from _reset().
  */
 int omap_hwmod_reset(struct omap_hwmod *oh)
 {
 	int r;
 
-	if (!oh || !(oh->_state & _HWMOD_STATE_ENABLED))
+	if (!oh)
 		return -EINVAL;
 
 	mutex_lock(&omap_hwmod_mutex);
 	r = _reset(oh);
-	if (!r)
-		r = _omap_hwmod_enable(oh);
 	mutex_unlock(&omap_hwmod_mutex);
 
 	return r;

  parent reply	other threads:[~2010-09-21 16:34 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-21 16:34 [PATCH 00/11] OMAP: hwmod: core patches for 2.6.37 Paul Walmsley
2010-09-21 16:34 ` [PATCH 01/11] OMAP: hwmod: Rename dma_ch to dma_req Paul Walmsley
2010-09-21 16:34 ` [PATCH 02/11] OMAP: hwmod: Do not disable clocks if hwmod already in idle Paul Walmsley
2010-09-21 16:34 ` Paul Walmsley [this message]
2010-09-21 16:34 ` [PATCH 04/11] OMAP4: prcm: Fix global warm reset bit position Paul Walmsley
2010-09-21 16:34 ` [PATCH 05/11] [PATCH] OMAP: hwmod: separate list locking and hwmod hardware locking Paul Walmsley
2010-09-21 16:34 ` [PATCH 06/11] OMAP4: prcm: Add temporarily helper functions for rmw and read inside the PRM Paul Walmsley
2010-09-21 16:34 ` [PATCH 07/11] OMAP4: PRM: add module hard reset support Paul Walmsley
2010-09-21 16:34 ` [PATCH 08/11] OMAP2/3: " Paul Walmsley
2010-09-21 16:34 ` [PATCH 09/11] OMAP: hwmod: Add hardreset management support Paul Walmsley
2010-09-21 16:34 ` [PATCH 10/11] OMAP: hwmod: Force a softreset during _setup Paul Walmsley
2010-09-21 16:34 ` [PATCH 11/11] OMAP: hwmod: add an hardreset API for use by other core code Paul Walmsley

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