/* Write status register 1 byte Returns negative if error occurred.  */
static int write_sr(struct m25p *flash, u8 val)
/* Write status register 1 byte Returns negative if error occurred.  */
static int write_sr(struct m25p *flash, u8 val)
{
	flash->command[0] = OPCODE_WRSR;
	flash->command[1] = val;
	return spi_write(flash->spi, flash->command, 2);
}