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authorBjörn Ardö <bjorn.ardo@axis.com>2019-09-05 17:50:26 +0300
committerWolfram Sang <wsa@the-dreams.de>2019-09-05 23:26:04 +0300
commitfe050f99072d6b5175c35427a6f72846790441ec (patch)
tree0a90880a508cdac4dc14e318d7be660983410c13 /drivers/i2c
parent41d529d6227c443a5827cb8b8f040402dedcf3d2 (diff)
downloadlinux-fe050f99072d6b5175c35427a6f72846790441ec.tar.xz
i2c: slave-eeprom: Add comment about address handling
The behaviour of the EEPROM in the case where we only send an 8bit address to a 16bit address EEPROM is not defined. Added comment about that the slave-eeprom might behave differently from how an actual device does (only one model measured). Reported-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Björn Ardö <bjorn.ardo@axis.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/i2c-slave-eeprom.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c
index 773afaabfb61..92ff9991bae8 100644
--- a/drivers/i2c/i2c-slave-eeprom.c
+++ b/drivers/i2c/i2c-slave-eeprom.c
@@ -11,6 +11,12 @@
* pointer, yet implementation is deferred until the need actually arises.
*/
+/*
+ * FIXME: What to do if only 8 bits of a 16 bit address are sent?
+ * The ST-M24C64 sends only 0xff then. Needs verification with other
+ * EEPROMs, though. We currently use the 8 bit as a valid address.
+ */
+
#include <linux/bitfield.h>
#include <linux/i2c.h>
#include <linux/init.h>