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firewire: ohci: fix error path to detect initiated reset in TI TSB41BA3D phy

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A commit 404957c1e2 ("firewire: ohci: use guard macro to serialize
accesses to phy registers") refactored initiated_reset() helper function,
while the error path was changed wrongly.

This commit fixes the bug.

Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Fixes: 80f3401dfe ("firewire: ohci: use guard macro to serialize accesses to phy registers")
Link: https://lore.kernel.org/r/20240817091128.180303-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
This commit is contained in:
Takashi Sakamoto 2024-08-17 18:11:28 +09:00
parent e8b89bc158
commit 52f9fcbc7b
1 changed files with 10 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/firewire/ohci.c
View File

@ -1919,7 +1919,7 @@ static int get_self_id_pos(struct fw_ohci *ohci, u32 self_id,
return i;
}
static bool initiated_reset(struct fw_ohci *ohci)
static int detect_initiated_reset(struct fw_ohci *ohci, bool *is_initiated_reset)
{
int reg;
@ -1946,7 +1946,9 @@ static bool initiated_reset(struct fw_ohci *ohci)
return reg;
// bit 3 indicates "initiated reset"
return !!((reg & 0x08) == 0x08);
*is_initiated_reset = !!((reg & 0x08) == 0x08);
return 0;
}
/*
@ -1956,7 +1958,8 @@ static bool initiated_reset(struct fw_ohci *ohci)
*/
static int find_and_insert_self_id(struct fw_ohci *ohci, int self_id_count)
{
int reg, i, pos;
int reg, i, pos, err;
bool is_initiated_reset;
u32 self_id = 0;
// link active 1, speed 3, bridge 0, contender 1, more packets 0.
@ -1985,7 +1988,6 @@ static int find_and_insert_self_id(struct fw_ohci *ohci, int self_id_count)
for (i = 0; i < 3; i++) {
enum phy_packet_self_id_port_status status;
int err;
err = get_status_for_port(ohci, i, &status);
if (err < 0)
@ -1994,7 +1996,10 @@ static int find_and_insert_self_id(struct fw_ohci *ohci, int self_id_count)
self_id_sequence_set_port_status(&self_id, 1, i, status);
}
phy_packet_self_id_zero_set_initiated_reset(&self_id, initiated_reset(ohci));
err = detect_initiated_reset(ohci, &is_initiated_reset);
if (err < 0)
return err;
phy_packet_self_id_zero_set_initiated_reset(&self_id, is_initiated_reset);
pos = get_self_id_pos(ohci, self_id, self_id_count);
if (pos >= 0) {