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SubjectRe: [PATCH] platform/chrome: fix wilco-ec dependencies
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Hi,

On 4/3/19 21:06, Arnd Bergmann wrote:
> When CROS_EC_LPC is set to =m, we get a link failure for a
> builtin wilco-ec module:
>
> drivers/platform/chrome/wilco_ec/core.o: In function `wilco_ec_remove':
> core.c:(.text+0x26): undefined reference to `cros_ec_lpc_mec_destroy'
> drivers/platform/chrome/wilco_ec/core.o: In function `wilco_ec_probe':
> core.c:(.text+0x18c): undefined reference to `cros_ec_lpc_mec_init'
> core.c:(.text+0x224): undefined reference to `cros_ec_lpc_mec_destroy'
> drivers/platform/chrome/wilco_ec/mailbox.o: In function `wilco_ec_mailbox':
> mailbox.c:(.text+0x104): undefined reference to `cros_ec_lpc_io_bytes_mec'
>
> The problem with the existing CROS_EC_LPC_MEC dependency is that this
> is only for a 'bool' symbol, so the information about the exported
> functions being in a module is lost on the way, and we actually have
> to depend on both CROS_EC_LPC and CROS_EC_LPC_MEC.
>
> Fixes: 7b3d4f44abf0 ("platform/chrome: Add new driver for Wilco EC")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/platform/chrome/wilco_ec/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/platform/chrome/wilco_ec/Kconfig b/drivers/platform/chrome/wilco_ec/Kconfig
> index 4a119ced4d0c..e09e4cebe9b4 100644
> --- a/drivers/platform/chrome/wilco_ec/Kconfig
> +++ b/drivers/platform/chrome/wilco_ec/Kconfig
> @@ -1,6 +1,6 @@
> config WILCO_EC
> tristate "ChromeOS Wilco Embedded Controller"
> - depends on ACPI && X86 && CROS_EC_LPC_MEC
> + depends on ACPI && X86 && CROS_EC_LPC && CROS_EC_LPC_MEC
> help
> If you say Y here, you get support for talking to the ChromeOS
> Wilco EC over an eSPI bus. This uses a simple byte-level protocol
>

Applied as a fix to our chrome-platform-5.1 branch.

Thanks,
Enric

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