FAILED: patch "[PATCH] mtd: maps: gpio-addr-flash: Fix ioremapped size" failed to apply to 4.9-stable tree

The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Ricardo Ribalda Delgado <[email protected]>
Date: Thu, 4 Oct 2018 15:01:04 +0200
Subject: [PATCH] mtd: maps: gpio-addr-flash: Fix ioremapped size

We should only iomap the area of the chip that is memory mapped. Otherwise we could be mapping devices beyond the memory space or that belong to other devices.

index 17be47f72973..6de16e81994c 100644
@@ -234,7 +234,7 @@ static int gpio_flash_probe(struct platform_device *pdev)
 	state->map.copy_to    = gf_copy_to;
 	state->map.bankwidth  = pdata->width;
 	state->map.size       = state->win_size * (1 << state->gpio_count);
-	state->map.virt       = ioremap_nocache(memory->start, state->map.size);
+	state->map.virt       = ioremap_nocache(memory->start, state->win_size);
 	if (!state->map.virt)
 		return -ENOMEM;