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[PATCH] staging: pi433: fix Kconfig entry

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I ran into a build error with the new pi433 driver and
CONFIG_SPI disabled:

drivers/staging/pi433/pi433_if.o: In function `pi433_probe.part.6':
pi433_if.c:(.text+0x1657): undefined reference to `spi_write_then_read'
drivers/staging/pi433/pi433_if.o: In function `pi433_probe':
pi433_if.c:(.text+0x1d28): undefined reference to `spi_setup'
drivers/staging/pi433/pi433_if.o: In function `pi433_init':

I'm adding a Kconfig dependency on CONFIG_SPI here to avoid that,
and since I spot two cosmetic mistakes in the entry, I'm also
fixing the whitespace and remove the redundant 'default n'.

Fixes: 874bcba65f9a ("staging: pi433: New driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/staging/pi433/Kconfig | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/pi433/Kconfig b/drivers/staging/pi433/Kconfig
index b2716b85d5af..2fd07991c871 100644
--- a/drivers/staging/pi433/Kconfig
+++ b/drivers/staging/pi433/Kconfig
@@ -1,16 +1,16 @@
 config PI433
-        tristate "Pi433 - a 433MHz radio module for Raspberry Pi"
-        default n
-        ---help---
-          This option allows you to enable support for the radio module Pi433.
+	tristate "Pi433 - a 433MHz radio module for Raspberry Pi"
+	depends on SPI
+	---help---
+	  This option allows you to enable support for the radio module Pi433.
 
-          Pi433 is a shield that fits onto the GPIO header of a Raspberry Pi
-          or compatible. It extends the Raspberry Pi with the option, to
-          send and receive data in the 433MHz ISM band - for example to
-          communicate between two systems without using ethernet or bluetooth
-          or for control or read sockets, actors, sensors, widely available
-          for low price.
+	  Pi433 is a shield that fits onto the GPIO header of a Raspberry Pi
+	  or compatible. It extends the Raspberry Pi with the option, to
+	  send and receive data in the 433MHz ISM band - for example to
+	  communicate between two systems without using ethernet or bluetooth
+	  or for control or read sockets, actors, sensors, widely available
+	  for low price.
 
-          For details or the option to buy, please visit https://pi433.de/en.html
+	  For details or the option to buy, please visit https://pi433.de/en.html
 
-          If in doubt, say N here, but saying yes most probably won't hurt
+	  If in doubt, say N here, but saying yes most probably won't hurt
-- 
2.9.0

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[PATCH] staging: pi433: fix Kconfig entry Arnd Bergmann <arnd@arndb.de> - 2017-07-25 17:40 +0200
  Re: [PATCH] staging: pi433: fix Kconfig entry Marcus Wolf <marcus.wolf@wolf-entwicklungen.de> - 2017-07-26 09:30 +0200
  Re: [PATCH] staging: pi433: fix Kconfig entry Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-29 02:00 +0200

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