FAILED: patch "[PATCH] mtd: spi-nor: Skip erase logic when SPI_NOR_NO_ERASE is set" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-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 151c6b49d679872d6fc0b50e0ad96303091694a2 Mon Sep 17 00:00:00 2001
From: Tudor Ambarus <[email protected]>
Date: Mon, 28 Feb 2022 18:33:34 +0200
Subject: [PATCH] mtd: spi-nor: Skip erase logic when SPI_NOR_NO_ERASE is set

Even if SPI_NOR_NO_ERASE was set, one could still send erase opcodes to the flash. It is not recommended to send unsupported opcodes to flashes. Fix the logic and do not set mtd->_erase when SPI_NOR_NO_ERASE is specified. With this users will not be able to issue erase opcodes to flashes and instead they will recive an -ENOTSUPP error.

index 9014008e60b3..b4f141ad9c9c 100644
@@ -2948,10 +2948,11 @@ static void spi_nor_set_mtd_info(struct spi_nor *nor)
 	mtd->flags = MTD_CAP_NORFLASH;
 	if (nor->info->flags & SPI_NOR_NO_ERASE)
 		mtd->flags |= MTD_NO_ERASE;
+	else
+		mtd->_erase = spi_nor_erase;
 	mtd->writesize = nor->params->writesize;
 	mtd->writebufsize = nor->params->page_size;
 	mtd->size = nor->params->size;
-	mtd->_erase = spi_nor_erase;
 	mtd->_read = spi_nor_read;
 	/* Might be already set by some SST flashes. */
 	if (!mtd->_write)