linux-kernel - [PATCH v2 12/41] media: atomisp: get rid of a warning message

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Date:   Sat, 30 May 2020 08:55:29 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 12/41] media: atomisp: get rid of a warning message

There's a warning message about an unused code. The code that
were using it were commented out, due to a problem causing the
firmware load to fail on the machines we're using for testing.

Change the place where we're commenting the code out, in order
to avoid the warning.

Fixes: 95d1f398c4dc ("media: atomisp: keep the ISP powered on when setting it")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 .../staging/media/atomisp/pci/atomisp_v4l2.c   | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
index b30a2e54067c..c89d477a3948 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
@@ -734,6 +734,10 @@ static int atomisp_mrfld_pre_power_down(struct atomisp_device *isp)
 * WA for DDR DVFS enable/disable
 * By default, ISP will force DDR DVFS 1600MHz before disable DVFS
 */
+
+#if 0
+// Used only by atomisp_mrfld_power
+
 static void punit_ddr_dvfs_enable(bool enable)
 {
 	int door_bell = 1 << 8;
@@ -758,9 +762,12 @@ static void punit_ddr_dvfs_enable(bool enable)
 	if (max_wait == -1)
 		pr_info("DDR DVFS, door bell is not cleared within 3ms\n");
 }
+#endif
 
 static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
 {
+// FIXME: at least with ISP2401, the code below causes the driver to break
+#if 0
 	unsigned long timeout;
 	u32 val = enable ? MRFLD_ISPSSPM0_IUNIT_POWER_ON :
 			   MRFLD_ISPSSPM0_IUNIT_POWER_OFF;
@@ -817,22 +824,21 @@ static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
 
 	dev_err(isp->dev, "IUNIT power-%s timeout.\n", enable ? "on" : "off");
 	return -EBUSY;
+#else
+	return 0;
+#endif
 }
 
 /* Workaround for pmu_nc_set_power_state not ready in MRFLD */
 int atomisp_mrfld_power_down(struct atomisp_device *isp)
 {
-	return 0;
-// FIXME: at least with ISP2401, the code below causes the driver to break
-//	return atomisp_mrfld_power(isp, false);
+	return atomisp_mrfld_power(isp, false);
 }
 
 /* Workaround for pmu_nc_set_power_state not ready in MRFLD */
 int atomisp_mrfld_power_up(struct atomisp_device *isp)
 {
-	return 0;
-// FIXME: at least with ISP2401, the code below causes the driver to break
-//	return atomisp_mrfld_power(isp, true);
+	return atomisp_mrfld_power(isp, true);
 }
 
 int atomisp_runtime_suspend(struct device *dev)
-- 
2.26.2