From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eduardo Valentin Subject: [PATCHv2 5/5] staging: omap-thermal: fix context restore function Date: Tue, 13 Nov 2012 14:10:04 -0400 Message-ID: <1352830204-21546-6-git-send-email-eduardo.valentin@ti.com> References: <1352830204-21546-1-git-send-email-eduardo.valentin@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1352830204-21546-1-git-send-email-eduardo.valentin@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: gregkh@linuxfoundation.org Cc: b-cousson@ti.com, devel@driverdev.osuosl.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, Radhesh Fadnis , Enric Balletbo i Serra , Eduardo Valentin List-Id: linux-omap@vger.kernel.org From: Radhesh Fadnis In the context restore function, if the context is lost or not is being checked by the contents of the counter register. But this is logic hold good as long as counter reset value is zero, if the reset value is non-zero then above logic doesn't hold good. Hence removed checking of the register value and restoring the context. Signed-off-by: Radhesh Fadnis Signed-off-by: Enric Balletbo i Serra Signed-off-by: Eduardo Valentin --- drivers/staging/omap-thermal/omap-bandgap.c | 57 ++++++++++----------------- 1 files changed, 21 insertions(+), 36 deletions(-) diff --git a/drivers/staging/omap-thermal/omap-bandgap.c b/drivers/staging/omap-thermal/omap-bandgap.c index 3eb726f..c17bc95 100644 --- a/drivers/staging/omap-thermal/omap-bandgap.c +++ b/drivers/staging/omap-thermal/omap-bandgap.c @@ -1065,7 +1065,6 @@ static int omap_bandgap_save_ctxt(struct omap_bandgap *bg_ptr) static int omap_bandgap_restore_ctxt(struct omap_bandgap *bg_ptr) { int i; - u32 temp = 0; for (i = 0; i < bg_ptr->conf->sensor_count; i++) { struct temp_sensor_registers *tsr; @@ -1078,41 +1077,27 @@ static int omap_bandgap_restore_ctxt(struct omap_bandgap *bg_ptr) if (OMAP_BANDGAP_HAS(bg_ptr, COUNTER)) val = omap_bandgap_readl(bg_ptr, tsr->bgap_counter); - if (val == 0) { - if (OMAP_BANDGAP_HAS(bg_ptr, TSHUT_CONFIG)) - omap_bandgap_writel(bg_ptr, - rval->tshut_threshold, - tsr->tshut_threshold); - /* Force immediate temperature measurement and update - * of the DTEMP field - */ - omap_bandgap_force_single_read(bg_ptr, i); - - if (OMAP_BANDGAP_HAS(bg_ptr, COUNTER)) - omap_bandgap_writel(bg_ptr, rval->bg_counter, - tsr->bgap_counter); - if (OMAP_BANDGAP_HAS(bg_ptr, MODE_CONFIG)) - omap_bandgap_writel(bg_ptr, rval->bg_mode_ctrl, - tsr->bgap_mode_ctrl); - if (OMAP_BANDGAP_HAS(bg_ptr, TALERT)) { - omap_bandgap_writel(bg_ptr, - rval->bg_threshold, - tsr->bgap_threshold); - omap_bandgap_writel(bg_ptr, rval->bg_ctrl, - tsr->bgap_mask_ctrl); - } - } else { - temp = omap_bandgap_readl(bg_ptr, - tsr->temp_sensor_ctrl); - temp &= (tsr->bgap_dtemp_mask); - omap_bandgap_force_single_read(bg_ptr, i); - if (temp == 0 && OMAP_BANDGAP_HAS(bg_ptr, TALERT)) { - temp = omap_bandgap_readl(bg_ptr, - tsr->bgap_mask_ctrl); - temp |= 1 << __ffs(tsr->mode_ctrl_mask); - omap_bandgap_writel(bg_ptr, temp, - tsr->bgap_mask_ctrl); - } + if (OMAP_BANDGAP_HAS(bg_ptr, TSHUT_CONFIG)) + omap_bandgap_writel(bg_ptr, + rval->tshut_threshold, + tsr->tshut_threshold); + /* Force immediate temperature measurement and update + * of the DTEMP field + */ + omap_bandgap_force_single_read(bg_ptr, i); + + if (OMAP_BANDGAP_HAS(bg_ptr, COUNTER)) + omap_bandgap_writel(bg_ptr, rval->bg_counter, + tsr->bgap_counter); + if (OMAP_BANDGAP_HAS(bg_ptr, MODE_CONFIG)) + omap_bandgap_writel(bg_ptr, rval->bg_mode_ctrl, + tsr->bgap_mode_ctrl); + if (OMAP_BANDGAP_HAS(bg_ptr, TALERT)) { + omap_bandgap_writel(bg_ptr, + rval->bg_threshold, + tsr->bgap_threshold); + omap_bandgap_writel(bg_ptr, rval->bg_ctrl, + tsr->bgap_mask_ctrl); } } -- 1.7.7.1.488.ge8e1c