From: Bob Moore <robert.moore@xxxxxxxxx> 1) Return an actual status value from acpi_ev_get_gpe_xrupt_block. 2) Don't clobber the status when exiting acpi_ev_install_gpe_block. Buglink: https://bugs.acpica.org/show_bug.cgi?id=1019 Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx> Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> --- drivers/acpi/acpica/acevents.h | 4 +++- drivers/acpi/acpica/evgpeblk.c | 8 ++++---- drivers/acpi/acpica/evgpeutil.c | 24 +++++++++++++++--------- 3 files changed, 22 insertions(+), 14 deletions(-) diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 41abe55..0738305 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -149,7 +149,9 @@ acpi_status acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block, void *context); -struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number); +acpi_status +acpi_ev_get_gpe_xrupt_block(u32 interrupt_number, + struct acpi_gpe_xrupt_info **gpe_xrupt_block); acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt); diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c index a9e76bc..a31e549 100644 --- a/drivers/acpi/acpica/evgpeblk.c +++ b/drivers/acpi/acpica/evgpeblk.c @@ -87,9 +87,9 @@ acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, return_ACPI_STATUS(status); } - gpe_xrupt_block = acpi_ev_get_gpe_xrupt_block(interrupt_number); - if (!gpe_xrupt_block) { - status = AE_NO_MEMORY; + status = + acpi_ev_get_gpe_xrupt_block(interrupt_number, &gpe_xrupt_block); + if (ACPI_FAILURE(status)) { goto unlock_and_exit; } @@ -112,7 +112,7 @@ acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, acpi_os_release_lock(acpi_gbl_gpe_lock, flags); unlock_and_exit: - status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c index d3f5e1e..4d764e8 100644 --- a/drivers/acpi/acpica/evgpeutil.c +++ b/drivers/acpi/acpica/evgpeutil.c @@ -197,8 +197,9 @@ acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info, * FUNCTION: acpi_ev_get_gpe_xrupt_block * * PARAMETERS: interrupt_number - Interrupt for a GPE block + * gpe_xrupt_block - Where the block is returned * - * RETURN: A GPE interrupt block + * RETURN: Status * * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt * block per unique interrupt level used for GPEs. Should be @@ -207,7 +208,9 @@ acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info, * ******************************************************************************/ -struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number) +acpi_status +acpi_ev_get_gpe_xrupt_block(u32 interrupt_number, + struct acpi_gpe_xrupt_info ** gpe_xrupt_block) { struct acpi_gpe_xrupt_info *next_gpe_xrupt; struct acpi_gpe_xrupt_info *gpe_xrupt; @@ -221,7 +224,8 @@ struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number) next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head; while (next_gpe_xrupt) { if (next_gpe_xrupt->interrupt_number == interrupt_number) { - return_PTR(next_gpe_xrupt); + *gpe_xrupt_block = next_gpe_xrupt; + return_ACPI_STATUS(AE_OK); } next_gpe_xrupt = next_gpe_xrupt->next; @@ -231,7 +235,7 @@ struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number) gpe_xrupt = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_xrupt_info)); if (!gpe_xrupt) { - return_PTR(NULL); + return_ACPI_STATUS(AE_NO_MEMORY); } gpe_xrupt->interrupt_number = interrupt_number; @@ -250,6 +254,7 @@ struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number) } else { acpi_gbl_gpe_xrupt_list_head = gpe_xrupt; } + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); /* Install new interrupt handler if not SCI_INT */ @@ -259,14 +264,15 @@ struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number) acpi_ev_gpe_xrupt_handler, gpe_xrupt); if (ACPI_FAILURE(status)) { - ACPI_ERROR((AE_INFO, - "Could not install GPE interrupt handler at level 0x%X", - interrupt_number)); - return_PTR(NULL); + ACPI_EXCEPTION((AE_INFO, status, + "Could not install GPE interrupt handler at level 0x%X", + interrupt_number)); + return_ACPI_STATUS(status); } } - return_PTR(gpe_xrupt); + *gpe_xrupt_block = gpe_xrupt; + return_ACPI_STATUS(AE_OK); } /******************************************************************************* -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
