diff mbox

[1/3] smbus: allow returning an error from reads

Message ID 1392636226-26546-2-git-send-email-pbonzini@redhat.com
State New
Headers show

Commit Message

Paolo Bonzini Feb. 17, 2014, 11:23 a.m. UTC 
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/i2c/smbus.c         | 6 +++---
 include/hw/i2c/smbus.h | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)
diff mbox

Patch

diff --git a/hw/i2c/smbus.c b/hw/i2c/smbus.c
index 25d2d04..a8931b7 100644
--- a/hw/i2c/smbus.c
+++ b/hw/i2c/smbus.c
@@ -214,7 +214,7 @@  void smbus_quick_command(i2c_bus *bus, uint8_t addr, int read)
     i2c_end_transfer(bus);
 }
 
-uint8_t smbus_receive_byte(i2c_bus *bus, uint8_t addr)
+int smbus_receive_byte(i2c_bus *bus, uint8_t addr)
 {
     uint8_t data;
 
@@ -232,7 +232,7 @@  void smbus_send_byte(i2c_bus *bus, uint8_t addr, uint8_t data)
     i2c_end_transfer(bus);
 }
 
-uint8_t smbus_read_byte(i2c_bus *bus, uint8_t addr, uint8_t command)
+int smbus_read_byte(i2c_bus *bus, uint8_t addr, uint8_t command)
 {
     uint8_t data;
     i2c_start_transfer(bus, addr, 0);
@@ -252,7 +252,7 @@  void smbus_write_byte(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t data)
     i2c_end_transfer(bus);
 }
 
-uint16_t smbus_read_word(i2c_bus *bus, uint8_t addr, uint8_t command)
+int smbus_read_word(i2c_bus *bus, uint8_t addr, uint8_t command)
 {
     uint16_t data;
     i2c_start_transfer(bus, addr, 0);
diff --git a/include/hw/i2c/smbus.h b/include/hw/i2c/smbus.h
index d764d75..4293733 100644
--- a/include/hw/i2c/smbus.h
+++ b/include/hw/i2c/smbus.h
@@ -67,11 +67,11 @@  struct SMBusDevice {
 
 /* Master device commands.  */
 void smbus_quick_command(i2c_bus *bus, uint8_t addr, int read);
-uint8_t smbus_receive_byte(i2c_bus *bus, uint8_t addr);
+int smbus_receive_byte(i2c_bus *bus, uint8_t addr);
 void smbus_send_byte(i2c_bus *bus, uint8_t addr, uint8_t data);
-uint8_t smbus_read_byte(i2c_bus *bus, uint8_t addr, uint8_t command);
+int smbus_read_byte(i2c_bus *bus, uint8_t addr, uint8_t command);
 void smbus_write_byte(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t data);
-uint16_t smbus_read_word(i2c_bus *bus, uint8_t addr, uint8_t command);
+int smbus_read_word(i2c_bus *bus, uint8_t addr, uint8_t command);
 void smbus_write_word(i2c_bus *bus, uint8_t addr, uint8_t command, uint16_t data);
 int smbus_read_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *data);
 void smbus_write_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *data,