diff options
Diffstat (limited to 'recipes/linux/linux-efika-2.6.20/0015-powerpc-Add-a-unified-uevent-handler-for-bus-based-on-of_device.txt')
| -rw-r--r-- | recipes/linux/linux-efika-2.6.20/0015-powerpc-Add-a-unified-uevent-handler-for-bus-based-on-of_device.txt | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/recipes/linux/linux-efika-2.6.20/0015-powerpc-Add-a-unified-uevent-handler-for-bus-based-on-of_device.txt b/recipes/linux/linux-efika-2.6.20/0015-powerpc-Add-a-unified-uevent-handler-for-bus-based-on-of_device.txt new file mode 100644 index 0000000000..6de1fd28f8 --- /dev/null +++ b/recipes/linux/linux-efika-2.6.20/0015-powerpc-Add-a-unified-uevent-handler-for-bus-based-on-of_device.txt @@ -0,0 +1,116 @@ +From 90dc591d4c897c7a49191888c1e4d413cc08b8b7 Mon Sep 17 00:00:00 2001 +From: Sylvain Munaut <tnt@246tNt.com> +Date: Sat, 23 Dec 2006 23:08:56 +0100 +Subject: [PATCH] [PATCH] powerpc: Add a unified uevent handler for bus based on of_device + +This common uevent handler allow the several bus types based on +of_device to generate the uevent properly and avoiding +code duplication. + +This handlers take a struct device as argument and can therefore +be used as the uevent call directly if no special treatment is +needed for the bus. + +Signed-off-by: Sylvain Munaut <tnt@246tNt.com> +--- + arch/powerpc/kernel/of_device.c | 66 +++++++++++++++++++++++++++++++++++++++ + include/asm-powerpc/of_device.h | 3 ++ + 2 files changed, 69 insertions(+), 0 deletions(-) + +diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c +index e921514..ac024ad 100644 +--- a/arch/powerpc/kernel/of_device.c ++++ b/arch/powerpc/kernel/of_device.c +@@ -120,6 +120,71 @@ void of_device_unregister(struct of_device *ofdev) + } + + ++int of_device_uevent(struct device *dev, ++ char **envp, int num_envp, char *buffer, int buffer_size) ++{ ++ struct of_device *ofdev; ++ const char *compat; ++ char *compat2; ++ char compat_buf[128]; /* need to be size of 'compatible' */ ++ int i = 0, length = 0, seen = 0, cplen, sl; ++ ++ if (!dev) ++ return -ENODEV; ++ ++ ofdev = to_of_device(dev); ++ ++ if (add_uevent_var(envp, num_envp, &i, ++ buffer, buffer_size, &length, ++ "OF_NAME=%s", ofdev->node->name)) ++ return -ENOMEM; ++ ++ if (add_uevent_var(envp, num_envp, &i, ++ buffer, buffer_size, &length, ++ "OF_TYPE=%s", ofdev->node->type)) ++ return -ENOMEM; ++ ++ /* Since the compatible field can contain pretty much anything ++ * it's not really legal to split it out with commas. We split it ++ * up using a number of environment variables instead. */ ++ ++ compat = get_property(ofdev->node, "compatible", &cplen); ++ compat2 = compat_buf; ++ if (compat) ++ memcpy(compat2, compat, cplen); ++ while (compat && *compat && cplen > 0) { ++ if (add_uevent_var(envp, num_envp, &i, ++ buffer, buffer_size, &length, ++ "OF_COMPATIBLE_%d=%s", seen, compat)) ++ return -ENOMEM; ++ ++ sl = strlen (compat) + 1; ++ compat += sl; ++ compat2 += sl; ++ cplen -= sl; ++ seen++; ++ compat2[-1] = 'C'; ++ } ++ compat2[seen?-1:0] = 0; ++ ++ if (add_uevent_var(envp, num_envp, &i, ++ buffer, buffer_size, &length, ++ "OF_COMPATIBLE_N=%d", seen)) ++ return -ENOMEM; ++ ++ if (add_uevent_var(envp, num_envp, &i, ++ buffer, buffer_size, &length, ++ "MODALIAS=of:N%sT%sC%s", ++ ofdev->node->name, ofdev->node->type, ++ compat_buf)) ++ return -ENOMEM; ++ ++ envp[i] = NULL; ++ ++ return 0; ++} ++ ++ + EXPORT_SYMBOL(of_match_node); + EXPORT_SYMBOL(of_match_device); + EXPORT_SYMBOL(of_device_register); +@@ -127,3 +192,4 @@ EXPORT_SYMBOL(of_device_unregister); + EXPORT_SYMBOL(of_dev_get); + EXPORT_SYMBOL(of_dev_put); + EXPORT_SYMBOL(of_release_dev); ++EXPORT_SYMBOL(of_device_uevent); +diff --git a/include/asm-powerpc/of_device.h b/include/asm-powerpc/of_device.h +index a889b20..4f1aabe 100644 +--- a/include/asm-powerpc/of_device.h ++++ b/include/asm-powerpc/of_device.h +@@ -32,5 +32,8 @@ extern int of_device_register(struct of_device *ofdev); + extern void of_device_unregister(struct of_device *ofdev); + extern void of_release_dev(struct device *dev); + ++extern int of_device_uevent(struct device *dev, ++ char **envp, int num_envp, char *buffer, int buffer_size); ++ + #endif /* __KERNEL__ */ + #endif /* _ASM_POWERPC_OF_DEVICE_H */ +-- +1.4.4.2 + |