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net: dsa: lan9303: Protect ALR operations with mutex

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ALR table operations are a sequence of related register operations which
should be protected from concurrent access. The alr_cache should also be
protected. Add alr_mutex doing that.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Egil Hjelmeland 2017-12-07 19:56:04 +01:00 • committed by David S. Miller
parent df45bf84e4
commit 2e8d243e88
2 changed files with 13 additions and 2 deletions
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1
include/linux/dsa/lan9303.h
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@ -26,6 +26,7 @@ struct lan9303 {
bool phy_addr_sel_strap;
struct dsa_switch *ds;
struct mutex indirect_mutex; /* protect indexed register access */
struct mutex alr_mutex; /* protect ALR access */
const struct lan9303_phy_ops *ops;
bool is_bridged; /* true if port 1 and 2 are bridged */