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mtd: cfi: enforce valid geometry configuration

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MTD allows compile-time configuration of the possible CFI geometry
settings that are allowed by the kernel, but that includes a couple of
invalid configurations, where no bank width or no interleave setting
is allowed. These are then caught with a compile-time warning:

include/linux/mtd/cfi.h:76:2: warning: #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work.
include/linux/mtd/map.h:145:2: warning: #warning "No CONFIG_MTD_MAP_BANK_WIDTH_xx selected. No NOR chip support can work"

This is a bit annoying for randconfig tests, and can be avoided if
we change the Kconfig logic to always select the simplest configuration
when no other one is enabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Arnd Bergmann 2015-11-23 14:39:33 +01:00 committed by Brian Norris
parent 2c81de771f
commit f5f92b36fb
1 changed files with 4 additions and 0 deletions
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4
drivers/mtd/chips/Kconfig
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@ -67,6 +67,10 @@ endchoice
config MTD_CFI_GEOMETRY
bool "Specific CFI Flash geometry selection"
depends on MTD_CFI_ADV_OPTIONS
select MTD_MAP_BANK_WIDTH_1 if !(MTD_MAP_BANK_WIDTH_2 || \
MTD_MAP_BANK_WIDTH_4 || MTD_MAP_BANK_WIDTH_8 || \
MTD_MAP_BANK_WIDTH_16 || MTD_MAP_BANK_WIDTH_32)
select MTD_CFI_I1 if !(MTD_CFI_I2 || MTD_CFI_I4 || MTD_CFI_I8)
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This option does not affect the code directly, but will enable
some other configuration options which would allow you to reduce