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From: Arnd Bergmann <arnd@arndb.de>
To: "Jérôme Pouiller" <jerome.pouiller@silabs.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>
Cc: devel@driverdev.osuosl.org, "Jules Irenge" <jbi.octave@gmail.com>,
	linux-kernel@vger.kernel.org, "Arnd Bergmann" <arnd@arndb.de>,
	"Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Subject: [PATCH] staging: wfx: avoid compiler warning on empty array
Date: Wed, 29 Apr 2020 16:21:09 +0200
Message-ID: <20200429142119.1735196-1-arnd@arndb.de> (raw)

When CONFIG_OF is disabled, gcc-9 produces a warning about the
wfx_sdio_of_match[] array having a declaration without a dimension:

drivers/staging/wfx/bus_sdio.c:159:34: error: array 'wfx_sdio_of_match' assumed to have one element [-Werror]
  159 | static const struct of_device_id wfx_sdio_of_match[];
      |                                  ^~~~~~~~~~~~~~~~~

Move the proper declaration up and out of the #ifdef instead.

Fixes: a7a91ca5a23d ("staging: wfx: add infrastructure for new driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/staging/wfx/bus_sdio.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/wfx/bus_sdio.c b/drivers/staging/wfx/bus_sdio.c
index dedc3ff58d3e..c2e4bd1e3b0a 100644
--- a/drivers/staging/wfx/bus_sdio.c
+++ b/drivers/staging/wfx/bus_sdio.c
@@ -156,7 +156,13 @@ static const struct hwbus_ops wfx_sdio_hwbus_ops = {
 	.align_size		= wfx_sdio_align_size,
 };
 
-static const struct of_device_id wfx_sdio_of_match[];
+static const struct of_device_id wfx_sdio_of_match[] = {
+	{ .compatible = "silabs,wfx-sdio" },
+	{ .compatible = "silabs,wf200" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, wfx_sdio_of_match);
+
 static int wfx_sdio_probe(struct sdio_func *func,
 			  const struct sdio_device_id *id)
 {
@@ -248,15 +254,6 @@ static const struct sdio_device_id wfx_sdio_ids[] = {
 };
 MODULE_DEVICE_TABLE(sdio, wfx_sdio_ids);
 
-#ifdef CONFIG_OF
-static const struct of_device_id wfx_sdio_of_match[] = {
-	{ .compatible = "silabs,wfx-sdio" },
-	{ .compatible = "silabs,wf200" },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, wfx_sdio_of_match);
-#endif
-
 struct sdio_driver wfx_sdio_driver = {
 	.name = "wfx-sdio",
 	.id_table = wfx_sdio_ids,
@@ -264,6 +261,6 @@ struct sdio_driver wfx_sdio_driver = {
 	.remove = wfx_sdio_remove,
 	.drv = {
 		.owner = THIS_MODULE,
-		.of_match_table = of_match_ptr(wfx_sdio_of_match),
+		.of_match_table = wfx_sdio_of_match,
 	}
 };
-- 
2.26.0

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Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-29 14:21 Arnd Bergmann [this message]
2020-04-29 16:04 ` Jerome Pouiller
2020-04-29 20:34   ` Arnd Bergmann
2020-04-30  8:42     ` Jerome Pouiller
2020-04-30 13:21       ` Arnd Bergmann

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