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path: root/drivers/i2c/i2c-core.c
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-rw-r--r--drivers/i2c/i2c-core.c38
1 files changed, 28 insertions, 10 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 19d8a994b3b7..372b5996d045 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -662,6 +662,28 @@ int i2c_control(struct i2c_client *client,
662 * Will not work for 10-bit addresses! 662 * Will not work for 10-bit addresses!
663 * ---------------------------------------------------- 663 * ----------------------------------------------------
664 */ 664 */
665/* Return: kind (>= 0) if force found, -1 if not found */
666static inline int i2c_probe_forces(struct i2c_adapter *adapter, int addr,
667 unsigned short **forces)
668{
669 unsigned short kind;
670 int j, adap_id = i2c_adapter_id(adapter);
671
672 for (kind = 0; forces[kind]; kind++) {
673 for (j = 0; forces[kind][j] != I2C_CLIENT_END; j += 2) {
674 if ((forces[kind][j] == adap_id ||
675 forces[kind][j] == ANY_I2C_BUS)
676 && forces[kind][j + 1] == addr) {
677 dev_dbg(&adapter->dev, "found force parameter, "
678 "addr 0x%02x, kind %u\n", addr, kind);
679 return kind;
680 }
681 }
682 }
683
684 return -1;
685}
686
665int i2c_probe(struct i2c_adapter *adapter, 687int i2c_probe(struct i2c_adapter *adapter,
666 struct i2c_client_address_data *address_data, 688 struct i2c_client_address_data *address_data,
667 int (*found_proc) (struct i2c_adapter *, int, int)) 689 int (*found_proc) (struct i2c_adapter *, int, int))
@@ -683,19 +705,15 @@ int i2c_probe(struct i2c_adapter *adapter,
683 at all */ 705 at all */
684 found = 0; 706 found = 0;
685 707
686 for (i = 0; !found && (address_data->force[i] != I2C_CLIENT_END); i += 2) { 708 if (address_data->forces) {
687 if (((adap_id == address_data->force[i]) || 709 int kind = i2c_probe_forces(adapter, addr,
688 (address_data->force[i] == ANY_I2C_BUS)) && 710 address_data->forces);
689 (addr == address_data->force[i+1])) { 711 if (kind >= 0) { /* force found */
690 dev_dbg(&adapter->dev, "found force parameter for adapter %d, addr %04x\n", 712 if ((err = found_proc(adapter, addr, kind)))
691 adap_id, addr);
692 if ((err = found_proc(adapter,addr,0)))
693 return err; 713 return err;
694 found = 1; 714 continue;
695 } 715 }
696 } 716 }
697 if (found)
698 continue;
699 717
700 /* If this address is in one of the ignores, we can forget about 718 /* If this address is in one of the ignores, we can forget about
701 it right now */ 719 it right now */