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authorDavid S. Miller <davem@davemloft.net>2020-09-23 01:45:34 +0200
committerDavid S. Miller <davem@davemloft.net>2020-09-23 01:45:34 +0200
commit3ab0a7a0c349a1d7beb2bb371a62669d1528269d (patch)
treed2ae17c3bfc829ce0c747ad97021cd4bc8fb11dc /drivers/thunderbolt/eeprom.c
parentnet: phy: bcm7xxx: Add an entry for BCM72113 (diff)
parentMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs (diff)
downloadlinux-3ab0a7a0c349a1d7beb2bb371a62669d1528269d.tar.xz
linux-3ab0a7a0c349a1d7beb2bb371a62669d1528269d.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Two minor conflicts: 1) net/ipv4/route.c, adding a new local variable while moving another local variable and removing it's initial assignment. 2) drivers/net/dsa/microchip/ksz9477.c, overlapping changes. One pretty prints the port mode differently, whilst another changes the driver to try and obtain the port mode from the port node rather than the switch node. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/thunderbolt/eeprom.c')
-rw-r--r--drivers/thunderbolt/eeprom.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/thunderbolt/eeprom.c b/drivers/thunderbolt/eeprom.c
index 3ebca44ab3fa..0c8471be3e32 100644
--- a/drivers/thunderbolt/eeprom.c
+++ b/drivers/thunderbolt/eeprom.c
@@ -7,6 +7,7 @@
*/
#include <linux/crc32.h>
+#include <linux/delay.h>
#include <linux/property.h>
#include <linux/slab.h>
#include "tb.h"
@@ -389,8 +390,8 @@ static int tb_drom_parse_entries(struct tb_switch *sw)
struct tb_drom_entry_header *entry = (void *) (sw->drom + pos);
if (pos + 1 == drom_size || pos + entry->len > drom_size
|| !entry->len) {
- tb_sw_warn(sw, "drom buffer overrun, aborting\n");
- return -EIO;
+ tb_sw_warn(sw, "DROM buffer overrun\n");
+ return -EILSEQ;
}
switch (entry->type) {
@@ -526,7 +527,8 @@ int tb_drom_read(struct tb_switch *sw)
u16 size;
u32 crc;
struct tb_drom_header *header;
- int res;
+ int res, retries = 1;
+
if (sw->drom)
return 0;
@@ -612,7 +614,17 @@ parse:
tb_sw_warn(sw, "drom device_rom_revision %#x unknown\n",
header->device_rom_revision);
- return tb_drom_parse_entries(sw);
+ res = tb_drom_parse_entries(sw);
+ /* If the DROM parsing fails, wait a moment and retry once */
+ if (res == -EILSEQ && retries--) {
+ tb_sw_warn(sw, "parsing DROM failed, retrying\n");
+ msleep(100);
+ res = tb_drom_read_n(sw, 0, sw->drom, size);
+ if (!res)
+ goto parse;
+ }
+
+ return res;
err:
kfree(sw->drom);
sw->drom = NULL;