[PATCH 01/20] mtd: rawnand: txx9ndfmc: Mark driver struct with __refdata to prevent section mismatch warning

["Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>]

As described in the added code comment, a reference to .exit.text is ok
for drivers registered via module_platform_driver_probe(). Make this
explicit to prevent a section mismatch warning with
CONFIG_MTD_NAND_TXX9NDFMC=m:

	WARNING: modpost: drivers/mtd/nand/raw/txx9ndfmc: section mismatch in reference: txx9ndfmc_driver+0x4 (section: .data) -> txx9ndfmc_remove (section: .exit.text)

Fixes: 64fb65baffa5 ("[MTD] TXx9 SoC NAND Flash Memory Controller driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
Hello,

note this warning only triggers with f177cd0c15fc ("modpost: Don't let
"driver"s reference .exit.*") that currently waits in next for the next
merge window + building with W=1.

Best regards
Uwe

 drivers/mtd/nand/raw/txx9ndfmc.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/txx9ndfmc.c b/drivers/mtd/nand/raw/txx9ndfmc.c
index eddcc0728a67..aff9d6f16851 100644
--- a/drivers/mtd/nand/raw/txx9ndfmc.c
+++ b/drivers/mtd/nand/raw/txx9ndfmc.c
@@ -406,7 +406,13 @@ static int txx9ndfmc_resume(struct platform_device *dev)
 #define txx9ndfmc_resume NULL
 #endif
 
-static struct platform_driver txx9ndfmc_driver = {
+/*
+ * txx9ndfmc_remove() lives in .exit.text. For drivers registered via
+ * module_platform_driver_probe() this is ok because they cannot get unbound at
+ * runtime. So mark the driver struct with __refdata to prevent modpost
+ * triggering a section mismatch warning.
+ */
+static struct platform_driver txx9ndfmc_driver __refdata = {
 	.remove		= __exit_p(txx9ndfmc_remove),
 	.resume		= txx9ndfmc_resume,
 	.driver		= {
-- 
2.40.1