[PATCH] NFC: trf7970a: Move trf7970a_init inside #ifdef CONFIG_PM_RUNTIME

[PATCH] NFC: trf7970a: Move trf7970a_init inside #ifdef CONFIG_PM_RUNTIME

[Geert Uytterhoeven]

If CONFIG_PM_RUNTIME=n:

drivers/nfc/trf7970a.c:755: warning: ‘trf7970a_init’ defined but not used

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
 drivers/nfc/trf7970a.c | 80 +++++++++++++++++++++++++-------------------------
 1 file changed, 40 insertions(+), 40 deletions(-)

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 3b78b031e617..41a153ecc6ed 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -751,45 +751,6 @@ static void trf7970a_timeout_work_handler(struct work_struct *work)
 	mutex_unlock(&trf->lock);
 }
 
-static int trf7970a_init(struct trf7970a *trf)
-{
-	int ret;
-
-	dev_dbg(trf->dev, "Initializing device - state: %d\n", trf->state);
-
-	ret = trf7970a_cmd(trf, TRF7970A_CMD_SOFT_INIT);
-	if (ret)
-		goto err_out;
-
-	ret = trf7970a_cmd(trf, TRF7970A_CMD_IDLE);
-	if (ret)
-		goto err_out;
-
-	/* Must clear NFC Target Detection Level reg due to erratum */
-	ret = trf7970a_write(trf, TRF7970A_NFC_TARGET_LEVEL, 0);
-	if (ret)
-		goto err_out;
-
-	ret = trf7970a_write(trf, TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS,
-			TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLH_96 |
-			TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLL_32);
-	if (ret)
-		goto err_out;
-
-	ret = trf7970a_write(trf, TRF7970A_SPECIAL_FCN_REG1, 0);
-	if (ret)
-		goto err_out;
-
-	trf->special_fcn_reg1 = 0;
-
-	trf->iso_ctrl = 0xff;
-	return 0;
-
-err_out:
-	dev_dbg(trf->dev, "Couldn't init device: %d\n", ret);
-	return ret;
-}
-
 static void trf7970a_switch_rf_off(struct trf7970a *trf)
 {
 	dev_dbg(trf->dev, "Switching rf off\n");
@@ -1430,6 +1391,45 @@ static int trf7970a_pm_runtime_suspend(struct device *dev)
 	return ret;
 }
 
+static int trf7970a_init(struct trf7970a *trf)
+{
+	int ret;
+
+	dev_dbg(trf->dev, "Initializing device - state: %d\n", trf->state);
+
+	ret = trf7970a_cmd(trf, TRF7970A_CMD_SOFT_INIT);
+	if (ret)
+		goto err_out;
+
+	ret = trf7970a_cmd(trf, TRF7970A_CMD_IDLE);
+	if (ret)
+		goto err_out;
+
+	/* Must clear NFC Target Detection Level reg due to erratum */
+	ret = trf7970a_write(trf, TRF7970A_NFC_TARGET_LEVEL, 0);
+	if (ret)
+		goto err_out;
+
+	ret = trf7970a_write(trf, TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS,
+			TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLH_96 |
+			TRF7970A_ADJUTABLE_FIFO_IRQ_LEVELS_WLL_32);
+	if (ret)
+		goto err_out;
+
+	ret = trf7970a_write(trf, TRF7970A_SPECIAL_FCN_REG1, 0);
+	if (ret)
+		goto err_out;
+
+	trf->special_fcn_reg1 = 0;
+
+	trf->iso_ctrl = 0xff;
+	return 0;
+
+err_out:
+	dev_dbg(trf->dev, "Couldn't init device: %d\n", ret);
+	return ret;
+}
+
 static int trf7970a_pm_runtime_resume(struct device *dev)
 {
 	struct spi_device *spi = container_of(dev, struct spi_device, dev);
@@ -1462,7 +1462,7 @@ static int trf7970a_pm_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif
+#endif /* CONFIG_PM_RUNTIME */
 
 static const struct dev_pm_ops trf7970a_pm_ops = {
 	SET_RUNTIME_PM_OPS(trf7970a_pm_runtime_suspend,
-- 
1.9.1

Re: [linux-nfc] [PATCH] NFC: trf7970a: Move trf7970a_init inside #ifdef CONFIG_PM_RUNTIME

[Mark A. Greer]

On Mon, Jun 16, 2014 at 08:58:55AM -0700, Mark A. Greer wrote:
> On Mon, Jun 16, 2014 at 03:06:13PM +0200, Geert Uytterhoeven wrote:
> > If CONFIG_PM_RUNTIME=n:
> > 
> > drivers/nfc/trf7970a.c:755: warning: ‘trf7970a_init’ defined but not used
> > 
> > Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
> 
> Acked-by: Mark A. Greer <mgreer@animalcreek.com>

Actually, I'd like to change my mind on this.  I've modified the code
locally and I will have to move trf7970a_init() back to where it originally
was again, if this patch is taken.  If you can tolerate the warning for
another week or so, I'll have a new set of patches that will fix it.

Not a big deal if you still want to take it.

Mark
--