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| author | Lukas Wunner <lukas@wunner.de> | 2017-06-06 14:25:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-09 11:42:42 +0200 |
| commit | 02b17a41ad102934a3772ffc82f345345c232ee4 (patch) | |
| tree | 450c50597bdf621d2ad82556b92de67bae46ad55 /drivers/thunderbolt/eeprom.c | |
| parent | thunderbolt: Do not fail if DROM data CRC32 is invalid (diff) | |
| download | linux-02b17a41ad102934a3772ffc82f345345c232ee4.tar.xz linux-02b17a41ad102934a3772ffc82f345345c232ee4.zip | |
thunderbolt: Refactor and fix parsing of port drom entries
Currently tb_drom_parse_entry() is only able to parse drom entries of
type TB_DROM_ENTRY_PORT. Rename it to tb_drom_parse_entry_port().
Fold tb_drom_parse_port_entry() into it.
Its return value is currently ignored. Evaluate it and abort parsing on
error.
Change tb_drom_parse_entries() to accommodate for parsing of other entry
types than TB_DROM_ENTRY_PORT.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/thunderbolt/eeprom.c')
| -rw-r--r-- | drivers/thunderbolt/eeprom.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/drivers/thunderbolt/eeprom.c b/drivers/thunderbolt/eeprom.c index e2c1f8a45522..5c7d80a109b1 100644 --- a/drivers/thunderbolt/eeprom.c +++ b/drivers/thunderbolt/eeprom.c @@ -295,25 +295,13 @@ int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid) return 0; } -static void tb_drom_parse_port_entry(struct tb_port *port, - struct tb_drom_entry_port *entry) -{ - port->link_nr = entry->link_nr; - if (entry->has_dual_link_port) - port->dual_link_port = - &port->sw->ports[entry->dual_link_port_nr]; -} - -static int tb_drom_parse_entry(struct tb_switch *sw, - struct tb_drom_entry_header *header) +static int tb_drom_parse_entry_port(struct tb_switch *sw, + struct tb_drom_entry_header *header) { struct tb_port *port; int res; enum tb_port_type type; - if (header->type != TB_DROM_ENTRY_PORT) - return 0; - port = &sw->ports[header->index]; port->disabled = header->port_disabled; if (port->disabled) @@ -332,7 +320,10 @@ static int tb_drom_parse_entry(struct tb_switch *sw, header->len, sizeof(struct tb_drom_entry_port)); return -EIO; } - tb_drom_parse_port_entry(port, entry); + port->link_nr = entry->link_nr; + if (entry->has_dual_link_port) + port->dual_link_port = + &port->sw->ports[entry->dual_link_port_nr]; } return 0; } @@ -347,6 +338,7 @@ static int tb_drom_parse_entries(struct tb_switch *sw) struct tb_drom_header *header = (void *) sw->drom; u16 pos = sizeof(*header); u16 drom_size = header->data_len + TB_DROM_DATA_START; + int res; while (pos < drom_size) { struct tb_drom_entry_header *entry = (void *) (sw->drom + pos); @@ -356,7 +348,15 @@ static int tb_drom_parse_entries(struct tb_switch *sw) return -EIO; } - tb_drom_parse_entry(sw, entry); + switch (entry->type) { + case TB_DROM_ENTRY_GENERIC: + break; + case TB_DROM_ENTRY_PORT: + res = tb_drom_parse_entry_port(sw, entry); + break; + } + if (res) + return res; pos += entry->len; } |