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commit70f1ae5f0eupstream. Read/write callbacks registered with nvmem core expect 0 to be returned on success and a negative value to be returned on failure. isl1208_nvmem_read()/isl1208_nvmem_write() currently return the number of bytes read/written on success, fix to return 0 on success and negative on failure. Fixes:c3544f6f51("rtc: isl1208: Add new style nvmem support to driver") Cc: stable@vger.kernel.org Signed-off-by: Joy Chakraborty <joychakr@google.com> Link: https://lore.kernel.org/r/20240612080831.1227131-1-joychakr@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>