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ARM: bcm2835: Fix integer overflow in rpi_firmware_print_firmware_revision() 

time64_t is 64-bit width type, we are not supposed to supply lesser ones
as in the case of rpi_firmware_print_firmware_revision() after the commit
4a60f58ee0 ("ARM: bcm2835: Switch to use %ptT"). Use temporary variable
of time64_t type to correctly handle lesser types.

Fixes: 4a60f58ee0 ("ARM: bcm2835: Switch to use %ptT")
Reported-by: Stefan Wahren <wahrenst@gmx.net>
Reported-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Revieved-by: Petr Mladek <pmladek@suse.com>
Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Link: https://lore.kernel.org/r/20200616163139.4229-1-andriy.shevchenko@linux.intel.com
This commit is contained in:
Andy Shevchenko 2020-06-16 19:31:39 +03:00 committed by Nicolas Saenz Julienne
parent b3a9e3b962
commit da785a8778
1 changed files with 4 additions and 1 deletions
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5
drivers/firmware/raspberrypi.c
View File

@ -181,6 +181,7 @@ EXPORT_SYMBOL_GPL(rpi_firmware_property);
static void
rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
{
time64_t date_and_time;
u32 packet;
int ret = rpi_firmware_property(fw,
RPI_FIRMWARE_GET_FIRMWARE_REVISION,
@ -189,7 +190,9 @@ rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
if (ret)
return;
dev_info(fw->cl.dev, "Attached to firmware from %ptT\n", &packet);
/* This is not compatible with y2038 */
date_and_time = packet;
dev_info(fw->cl.dev, "Attached to firmware from %ptT\n", &date_and_time);
}
static void