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| author |   Arnd Bergmann <arnd@arndb.de> | 2016-02-11 15:23:51 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-11 20:13:35 -0800 |
| commit | 28c09ec4b6b7a2f9f769966baf54eaf0d6fadf8c (patch) | |
| tree | 75078a403cb7d5fff1a8c22e8c4dd9b0f4257b23 /drivers/firmware | |
| parent | firmware: qemu_fw_cfg.c: fix typo FW_CFG_DATA_OFF (diff) | |
| download | linux-dev-28c09ec4b6b7a2f9f769966baf54eaf0d6fadf8c.tar.xz linux-dev-28c09ec4b6b7a2f9f769966baf54eaf0d6fadf8c.zip | |
firmware: qemu config needs I/O ports
Not all machines have PCI style I/O port memory, or they do not allow
mapping it using the ioport_map() function, whcih results in a
build error with the newly added qemu firmware code:
drivers/firmware/built-in.o: In function `fw_cfg_io_cleanup':
qemu_fw_cfg.c:(.text+0x144): undefined reference to `ioport_unmap'
drivers/firmware/built-in.o: In function `fw_cfg_sysfs_probe':
qemu_fw_cfg.c:(.text+0xb18): undefined reference to `ioport_map'
This adds a Kconfig dependency to ensure the driver can only
be built on platforms that support it.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 75f3e8e47f38 ("firmware: introduce sysfs driver for QEMU's fw_cfg device")
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 5130f74ae3bd..6664f1108c7c 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -164,6 +164,7 @@ config RASPBERRYPI_FIRMWARE config FW_CFG_SYSFS tristate "QEMU fw_cfg device support in sysfs" depends on SYSFS && (ARM || ARM64 || PPC_PMAC || SPARC || X86) + depends on HAS_IOPORT_MAP default n help Say Y or M here to enable the exporting of the QEMU firmware |