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Date: Sat, 5 Dec 2020 10:28:14 -0500 From: Sven Van Asbroeck <thesven73@...il.com> To: Woojung Huh <woojung.huh@...rochip.com>, Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>, Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, Florian Fainelli <f.fainelli@...il.com>, Vladimir Oltean <olteanv@...il.com>, David S Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org> Cc: Sven Van Asbroeck <thesven73@...il.com>, Helmut Grohne <helmut.grohne@...enta.de>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH net v1 2/2] net: dsa: microchip: improve port count comments From: Sven Van Asbroeck <thesven73@...il.com> Port counts in microchip dsa drivers can be quite confusing: on the ksz8795, ksz_chip_data->port_cnt excludes the cpu port, yet on the ksz9477, it includes the cpu port. Add comments to document this situation explicitly. Fixes: 912aae27c6af ("net: dsa: microchip: really look for phy-mode in port nodes") Signed-off-by: Sven Van Asbroeck <thesven73@...il.com> --- Tree: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git # 905b2032fa42 To: Woojung Huh <woojung.huh@...rochip.com> To: Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com> To: Andrew Lunn <andrew@...n.ch> To: Vivien Didelot <vivien.didelot@...il.com> To: Florian Fainelli <f.fainelli@...il.com> To: Vladimir Oltean <olteanv@...il.com> To: "David S. Miller" <davem@...emloft.net> To: Jakub Kicinski <kuba@...nel.org> Cc: Helmut Grohne <helmut.grohne@...enta.de> Cc: netdev@...r.kernel.org Cc: linux-kernel@...r.kernel.org drivers/net/dsa/microchip/ksz8795.c | 12 +++++++++--- drivers/net/dsa/microchip/ksz9477.c | 16 ++++++++++++---- 2 files changed, 21 insertions(+), 7 deletions(-) diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index f5779e152377..99183347053f 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -1190,7 +1190,9 @@ static const struct ksz_chip_data ksz8795_switch_chips[] = { .num_alus = 0, .num_statics = 8, .cpu_ports = 0x10, /* can be configured as cpu port */ - .port_cnt = 4, /* total physical port count */ + .port_cnt = 4, /* total physical port count, excluding + * the cpu port + */ }, { .chip_id = 0x8794, @@ -1199,7 +1201,9 @@ static const struct ksz_chip_data ksz8795_switch_chips[] = { .num_alus = 0, .num_statics = 8, .cpu_ports = 0x10, /* can be configured as cpu port */ - .port_cnt = 3, /* total physical port count */ + .port_cnt = 3, /* total physical port count, excluding + * the cpu port + */ }, { .chip_id = 0x8765, @@ -1208,7 +1212,9 @@ static const struct ksz_chip_data ksz8795_switch_chips[] = { .num_alus = 0, .num_statics = 8, .cpu_ports = 0x10, /* can be configured as cpu port */ - .port_cnt = 4, /* total physical port count */ + .port_cnt = 4, /* total physical port count, excluding + * the cpu port + */ }, }; diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index 2f5506ac7d19..e56122ffd495 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -1482,7 +1482,9 @@ static const struct ksz_chip_data ksz9477_switch_chips[] = { .num_alus = 4096, .num_statics = 16, .cpu_ports = 0x7F, /* can be configured as cpu port */ - .port_cnt = 7, /* total physical port count */ + .port_cnt = 7, /* total physical port count, including + * the cpu port + */ .phy_errata_9477 = true, }, { @@ -1492,7 +1494,9 @@ static const struct ksz_chip_data ksz9477_switch_chips[] = { .num_alus = 4096, .num_statics = 16, .cpu_ports = 0x7F, /* can be configured as cpu port */ - .port_cnt = 7, /* total physical port count */ + .port_cnt = 7, /* total physical port count, including + * the cpu port + */ .phy_errata_9477 = true, }, { @@ -1502,7 +1506,9 @@ static const struct ksz_chip_data ksz9477_switch_chips[] = { .num_alus = 4096, .num_statics = 16, .cpu_ports = 0x07, /* can be configured as cpu port */ - .port_cnt = 3, /* total port count */ + .port_cnt = 3, /* total physical port count, including + * the cpu port + */ }, { .chip_id = 0x00956700, @@ -1511,7 +1517,9 @@ static const struct ksz_chip_data ksz9477_switch_chips[] = { .num_alus = 4096, .num_statics = 16, .cpu_ports = 0x7F, /* can be configured as cpu port */ - .port_cnt = 7, /* total physical port count */ + .port_cnt = 7, /* total physical port count, including + * the cpu port + */ }, }; -- 2.17.1
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