Re: [PATCH v5 char-misc-next] misc: microchip: pci1xxxx: Add OTP/EEPROM driver for the pci1xxxx switch

From: Greg KH
Date: Sun Feb 12 2023 - 02:09:28 EST


On Sun, Feb 12, 2023 at 09:27:43AM +0530, Tharun Kumar P wrote:
> + /* Wait for the EPC_BUSY bit to get cleared */
> + do {
> + data = readl(priv->reg_base + MMAP_EEPROM_OFFSET(EEPROM_CMD_REG));
> + } while (data & EEPROM_CMD_EPC_BUSY_BIT);

Again, you can not sit and spin in a busy-wait like this with no chance
to recover if something goes wrong with the hardware (hint, what if it
got removed?)

please fix.

thanks,

greg k-h