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firmware: raspberrypi: print time using time64_t

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The firmware timestamp is an unsigned 32-bit value, but we copy it into
a signed 32-bit variable, so we can theoretically get an overflow in
the calculation when the timestamp is between 2038 and 2106.

This changes the temporary variable to time64_t and changes the deprecated
time_to_tm() over to time64_to_tm() accordingly.

There is still an overflow in y2106, but that is a limitation of the
firmware interface, not a kernel problem.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Arnd Bergmann 2017-11-27 12:57:14 +01:00 committed by Eric Anholt
parent 2bd6bf03f4
commit 9107ee6a50
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/raspberrypi.c
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@ -174,7 +174,7 @@ rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
if (ret == 0) {
struct tm tm;
time_to_tm(packet, 0, &tm);
time64_to_tm(packet, 0, &tm);
dev_info(fw->cl.dev,
"Attached to firmware from %04ld-%02d-%02d %02d:%02d\n",