Merge tag 'spi-nor/for-5.19' into mtd/next

SPI NOR core changes:
- Read back written SR value to make sure the write was done correctly.
- Introduce a common function for Read ID that manufacturer drivers can
  use to verify the Octal DTR switch worked correctly.
- Add helpers for read/write any register commands so manufacturer
  drivers don't open code it every time.
- Clarify rdsr dummy cycles documentation.
- Add debugfs entry to expose internal flash parameters and state.

SPI NOR manufacturer drivers changes:
- Add support for Winbond W25Q512NW-IM, and Eon EN25QH256A.
- Move spi_nor_write_ear() to Winbond module since only Winbond flashes
  use it.
- Rework Micron and Cypress Octal DTR enable methods to improve
  readability.
- Use the common Read ID function to verify switch to Octal DTR mode for
  Micron and Cypress flashes.
- Skip polling status on volatile register writes for Micron and Cypress
  flashes since the operation is instant.

Signed-off-by: Miquel Raynal <[email protected]>

1 files changed, 3 insertions, 18 deletions

diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 6b8b3ab8db48..3463629f8764 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -584,21 +584,6 @@ static struct platform_driver acerhdf_driver = {
 	.remove = acerhdf_remove,
 };
 
-/* checks if str begins with start */
-static int str_starts_with(const char *str, const char *start)
-{
-	unsigned long str_len = 0, start_len = 0;
-
-	str_len = strlen(str);
-	start_len = strlen(start);
-
-	if (str_len >= start_len &&
-			!strncmp(str, start, start_len))
-		return 1;
-
-	return 0;
-}
-
 /* check hardware */
 static int __init acerhdf_check_hardware(void)
 {
@@ -651,9 +636,9 @@ static int __init acerhdf_check_hardware(void)
 		 * check if actual hardware BIOS vendor, product and version
 		 * IDs start with the strings of BIOS table entry
 		 */
-		if (str_starts_with(vendor, bt->vendor) &&
-				str_starts_with(product, bt->product) &&
-				str_starts_with(version, bt->version)) {
+		if (strstarts(vendor, bt->vendor) &&
+		    strstarts(product, bt->product) &&
+		    strstarts(version, bt->version)) {
 			found = 1;
 			break;
 		}