linux: document and default to sensible value for BR2_LINUX_KERNEL_CUSTOM_GIT_VERSION

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

diff --git a/linux/Config.in b/linux/Config.in
index 148b85812019b80fb703724511c7e2adf8713dea..7595a4a1bbce3810d62dbdf991fdc6f393cc4ce8 100644 (file)
--- a/linux/Config.in
+++ b/linux/Config.in
@@ -69,7 +69,11 @@ config BR2_LINUX_KERNEL_CUSTOM_GIT_REPO_URL
 
 config BR2_LINUX_KERNEL_CUSTOM_GIT_VERSION
        string "Custom Git version"
+       default "HEAD"
        depends on BR2_LINUX_KERNEL_CUSTOM_GIT
+       help
+         Git revision to use in the format used by git rev-parse,
+         E.G. a sha id, a tag, branch, ..
 
 config BR2_LINUX_KERNEL_VERSION
        string