diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 517db2f2707f..100cab95a17b 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -283,6 +283,21 @@ static void fixup_use_write_buffers(struct mtd_info *mtd)
 		pr_debug("Using buffer write method\n");
 		mtd->_write = cfi_amdstd_write_buffers;
 	}
+
+	/*
+	 * The word count of the Write to Buffer command is a single bus
+	 * word per device, so an x8 device can be told to program at most
+	 * 256 bytes however large a buffer it advertises - including when
+	 * several of them are interleaved on a wider bus, where CMD()
+	 * replicates the count into each device's lane and it is truncated
+	 * there.
+	 */
+	if (cfi->device_type == CFI_DEVICETYPE_X8 &&
+	    cfi->cfiq->MaxBufWriteSize > 8) {
+		cfi->cfiq->MaxBufWriteSize = 8;
+		mtd->writebufsize = cfi_interleave(cfi) <<
+				    cfi->cfiq->MaxBufWriteSize;
+	}
 }
 #endif /* !FORCE_WORD_WRITE */