--- zzzz-none-000/linux-3.10.107/drivers/ide/ide-taskfile.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/drivers/ide/ide-taskfile.c	2021-11-10 11:53:55.000000000 +0000
@@ -239,9 +239,6 @@
 		unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs);
 		int page_is_high;
 
-		if (nr_bytes > PAGE_SIZE)
-			nr_bytes = PAGE_SIZE;
-
 		page = sg_page(cursg);
 		offset = cursg->offset + cmd->cursg_ofs;
 
@@ -249,6 +246,8 @@
 		page = nth_page(page, (offset >> PAGE_SHIFT));
 		offset %= PAGE_SIZE;
 
+		nr_bytes = min_t(unsigned, nr_bytes, (PAGE_SIZE - offset));
+
 		page_is_high = PageHighMem(page);
 		if (page_is_high)
 			local_irq_save(flags);