Revert "drivers/card_reader/rtsx_usb: Restore interrupt based detection"

commit 2397d61 upstream.

This reverts commit 235b630.

This commit was found responsible for issues with SD card recognition,
as users had to re-insert their cards in the readers and wait for a
while. As for some people the SD card was involved in the boot process
it also caused boot failures.

Cc: [email protected]
Link: https://bbs.archlinux.org/viewtopic.php?id=303321
Fixes: 235b630 ("drivers/card_reader/rtsx_usb: Restore interrupt based detection")
Reported-by: qf <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]
Signed-off-by: Christian Heusel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: christian-heusel

drivers/misc/cardreader/rtsx_usb.c

@@ -286,7 +286,6 @@ static int rtsx_usb_get_status_with_bulk(struct rtsx_ucr *ucr, u16 *status)
 int rtsx_usb_get_card_status(struct rtsx_ucr *ucr, u16 *status)
 {
 	int ret;
-	u8 interrupt_val = 0;
 	u16 *buf;
 
 	if (!status)
@@ -309,20 +308,6 @@ int rtsx_usb_get_card_status(struct rtsx_ucr *ucr, u16 *status)
 		ret = rtsx_usb_get_status_with_bulk(ucr, status);
 	}
 
-	rtsx_usb_read_register(ucr, CARD_INT_PEND, &interrupt_val);
-	/* Cross check presence with interrupts */
-	if (*status & XD_CD)
-		if (!(interrupt_val & XD_INT))
-			*status &= ~XD_CD;
-
-	if (*status & SD_CD)
-		if (!(interrupt_val & SD_INT))
-			*status &= ~SD_CD;
-
-	if (*status & MS_CD)
-		if (!(interrupt_val & MS_INT))
-			*status &= ~MS_CD;
-
 	/* usb_control_msg may return positive when success */
 	if (ret < 0)
 		return ret;