4.9-stable review patch. If anyone has any objections, please let me know.
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From: Arnd Bergmann arnd@arndb.de
commit 2a9d92fb3a1282a4659f1bb6d5684018846537b7 upstream.
I ran into a link-time error with the atmel-quadspi driver on the EBSA110 platform:
drivers/mtd/built-in.o: In function `atmel_qspi_run_command': :(.text+0x1ee3c): undefined reference to `_memcpy_toio' :(.text+0x1ee48): undefined reference to `_memcpy_fromio'
The problem is that _memcpy_toio/_memcpy_fromio are not available on that platform, and we have to prevent building the driver there.
In case we want to backport this to older kernels: between linux-4.8 and linux-4.20, the Kconfig entry was in drivers/mtd/spi-nor/Kconfig but had the same problem.
Link: https://lore.kernel.org/patchwork/patch/812860/ Fixes: 161aaab8a067 ("mtd: atmel-quadspi: add driver for Atmel QSPI controller") Signed-off-by: Arnd Bergmann arnd@arndb.de Reviewed-by: Boris Brezillon boris.brezillon@bootlin.com Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/mtd/spi-nor/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/spi-nor/Kconfig +++ b/drivers/mtd/spi-nor/Kconfig @@ -31,7 +31,7 @@ config MTD_SPI_NOR_USE_4K_SECTORS
config SPI_ATMEL_QUADSPI tristate "Atmel Quad SPI Controller" - depends on ARCH_AT91 || (ARM && COMPILE_TEST) + depends on ARCH_AT91 || (ARM && COMPILE_TEST && !ARCH_EBSA110) depends on OF && HAS_IOMEM help This enables support for the Quad SPI controller in master mode.