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Diffstat (limited to 'drivers/i2c/busses')
-rw-r--r--drivers/i2c/busses/i2c-viapro.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index c9366b50483..a2237d4b2cf 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -142,19 +142,18 @@ static int vt596_transaction(u8 size)
/* Make sure the SMBus host is ready to start transmitting */
if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
dev_dbg(&vt596_adapter.dev, "SMBus busy (0x%02x). "
- "Resetting... ", temp);
+ "Resetting...\n", temp);
outb_p(temp, SMBHSTSTS);
if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
- printk("Failed! (0x%02x)\n", temp);
+ dev_err(&vt596_adapter.dev, "SMBus reset failed! "
+ "(0x%02x)\n", temp);
return -1;
- } else {
- printk("Successful!\n");
}
}
/* Start the transaction by setting bit 6 */
- outb_p(0x40 | (size & 0x3C), SMBHSTCNT);
+ outb_p(0x40 | size, SMBHSTCNT);
/* We will always wait for a fraction of a second */
do {
@@ -171,7 +170,7 @@ static int vt596_transaction(u8 size)
if (temp & 0x10) {
result = -1;
dev_err(&vt596_adapter.dev, "Transaction failed (0x%02x)\n",
- inb_p(SMBHSTCNT) & 0x3C);
+ size);
}
if (temp & 0x08) {
@@ -180,11 +179,13 @@ static int vt596_transaction(u8 size)
}
if (temp & 0x04) {
+ int read = inb_p(SMBHSTADD) & 0x01;
result = -1;
- /* Quick commands are used to probe for chips, so
- errors are expected, and we don't want to frighten the
- user. */
- if ((inb_p(SMBHSTCNT) & 0x3C) != VT596_QUICK)
+ /* The quick and receive byte commands are used to probe
+ for chips, so errors are expected, and we don't want
+ to frighten the user. */
+ if (!((size == VT596_QUICK && !read) ||
+ (size == VT596_BYTE && read)))
dev_err(&vt596_adapter.dev, "Transaction error!\n");
}
@@ -462,9 +463,9 @@ static void __exit i2c_vt596_exit(void)
}
}
-MODULE_AUTHOR(
- "Frodo Looijaard <frodol@dds.nl> and "
- "Philip Edelbrock <phil@netroedge.com>");
+MODULE_AUTHOR("Kyosti Malkki <kmalkki@cc.hut.fi>, "
+ "Mark D. Studebaker <mdsxyz123@yahoo.com> and "
+ "Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("vt82c596 SMBus driver");
MODULE_LICENSE("GPL");