staging: gpib: Add bit and byte padding to ioctl structs

Ensure that all structs have a size that is an integral mutliple
of 32 bits.

Change trailing single bit field to __u32 in gpib_open_dev_ioctl
Add byte padding to  gpib_serial_poll_ioctl and gpib_request_service2
Add bit padding to gpib_board_info_ioctl and gpib_ppoll_config_ioctl

Signed-off-by: Dave Penkler <dpenkler@gmail.com>
Link: https://lore.kernel.org/r/20250603184320.30594-5-dpenkler@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/gpib/uapi/gpib_ioctl.h b/drivers/staging/gpib/uapi/gpib_ioctl.h
index 0da47e28caaa17b02503a340c25213dd7cad2394..55bf5e55507afee30f1626c9ddfead6d3db311ab 100644 (file)
--- a/drivers/staging/gpib/uapi/gpib_ioctl.h
+++ b/drivers/staging/gpib/uapi/gpib_ioctl.h
@@ -29,7 +29,7 @@ struct gpib_open_dev_ioctl {
        __u32 handle;
        __u32 pad;
        __s32 sad;
-       unsigned is_board : 1;
+       __u32 is_board;
 };
 
 struct gpib_close_dev_ioctl {
@@ -40,6 +40,7 @@ struct gpib_serial_poll_ioctl {
        __u32 pad;
        __s32 sad;
        __u8 status_byte;
+       __u8 padding[3];   // align to 32 bit boundary
 };
 
 struct gpib_eos_ioctl {
@@ -79,6 +80,7 @@ struct gpib_board_info_ioctl {
        __u32 t1_delay;
        unsigned ist : 1;
        unsigned no_7_bit_eos : 1;
+       unsigned padding :30; // align to 32 bit boundary
 };
 
 struct gpib_select_pci_ioctl {
@@ -90,6 +92,7 @@ struct gpib_ppoll_config_ioctl {
        __u8 config;
        unsigned set_ist : 1;
        unsigned clear_ist : 1;
+       unsigned padding :22; // align to 32 bit boundary
 };
 
 struct gpib_pad_ioctl {
@@ -110,6 +113,7 @@ struct gpib_select_device_path_ioctl {
 // update status byte and request service
 struct gpib_request_service2 {
        __u8 status_byte;
+       __u8 padding[3]; // align to 32 bit boundary
        __s32 new_reason_for_service;
 };