tree 3ff04aafd6c5ea69a0011662b6aa5ed2a6a2d623
parent bd6dbdf3c7b9784fbf5d8500e427a954e27a976a
author Kenji Kaneshige <[EMAIL PROTECTED]> Thu, 28 Jul 2005 22:42:00 -0400
committer Len Brown <[EMAIL PROTECTED]> Fri, 05 Aug 2005 06:12:08 -0400
[ACPI] acpi_register_gsi() can return error
Current acpi_register_gsi() function has no way to indicate errors to its
callers even though acpi_register_gsi() can fail to register gsi because of
some reasons (out of memory, lack of interrupt vectors, incorrect BIOS, and so
on). As a result, caller of acpi_register_gsi() cannot handle the case that
acpi_register_gsi() fails. I think failure of acpi_register_gsi() should be
handled properly.
This series of patches changes acpi_register_gsi() to return negative value on
error, and also changes callers of acpi_register_gsi() to handle failure of
acpi_register_gsi().
This patch changes the type of return value of acpi_register_gsi() from
"unsigned int" to "int" to indicate an error. If acpi_register_gsi() fails to
register gsi, it returns negative value.
Signed-off-by: Kenji Kaneshige <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Len Brown <[EMAIL PROTECTED]>
arch/i386/kernel/acpi/boot.c | 6 +++++-
arch/ia64/kernel/acpi.c | 6 +++++-
include/linux/acpi.h | 2 +-
3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -457,7 +457,11 @@ int acpi_gsi_to_irq(u32 gsi, unsigned in
return 0;
}
-unsigned int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
{
unsigned int irq;
unsigned int plat_gsi = gsi;
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -565,7 +565,11 @@ acpi_numa_arch_fixup (void)
}
#endif /* CONFIG_ACPI_NUMA */
-unsigned int
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int
acpi_register_gsi (u32 gsi, int edge_level, int active_high_low)
{
if (has_8259 && gsi < 16)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -432,7 +432,7 @@ static inline int acpi_boot_table_init(v
#endif /*!CONFIG_ACPI_BOOT*/
-unsigned int acpi_register_gsi (u32 gsi, int edge_level, int active_high_low);
+int acpi_register_gsi (u32 gsi, int edge_level, int active_high_low);
int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
/*
-
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