Hi Andrew! On Thu, Nov 19, 2020 at 01:20:47AM +0100, Andrew Lunn wrote:
On Wed, Nov 18, 2020 at 11:03:51PM +0100, Michael Grzeschik wrote:The variable mib_cnt is assigned with TOTAL_SWITCH_COUNTER_NUM. This value can also be derived from the array size of mib_names. This patch uses this calculated value instead, removes the extra define and uses mib_cnt everywhere possible instead of the static define TOTAL_SWITCH_COUNTER_NUM.Signed-off-by: Michael Grzeschik <m.grzesc...@pengutronix.de> --- drivers/net/dsa/microchip/ksz8795.c | 8 ++++---- drivers/net/dsa/microchip/ksz8795_reg.h | 3 --- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index 04a571bde7e6a4f..6ddba2de2d3026e 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -23,7 +23,7 @@ static const struct { char string[ETH_GSTRING_LEN]; -} mib_names[TOTAL_SWITCH_COUNTER_NUM] = { +} mib_names[] = { { "rx_hi" }, { "rx_undersize" }, { "rx_fragments" }, @@ -656,7 +656,7 @@ static void ksz8795_get_strings(struct dsa_switch *ds, int port, { int i; - for (i = 0; i < TOTAL_SWITCH_COUNTER_NUM; i++) { + for (i = 0; i < dev->mib_cnt; i++) { memcpy(buf + i * ETH_GSTRING_LEN, mib_names[i].string, ETH_GSTRING_LEN); } @@ -1236,7 +1236,7 @@ static int ksz8795_switch_init(struct ksz_device *dev) dev->port_mask |= dev->host_mask; dev->reg_mib_cnt = KSZ8795_COUNTER_NUM; - dev->mib_cnt = TOTAL_SWITCH_COUNTER_NUM; + dev->mib_cnt = ARRAY_SIZE(mib_names);Hi Michael I think it would be better to just use ARRAY_SIZE(mib_names) everywhere. It is one less hoop to jump through when looking for array overruns, etc.
I would better stay with the variable, because of two reasons. First it is also used in ksz_common.c and ksz_9477.c. Also in my next patches I will introduce another mib_names array. We will have ksz8863_mib_names and ksz8795_mib_names. In the init function then the mib_cnt will be set regarding to the chip that is found. Do you agree that the extra variable makes the code more readable in that case? Regards, Michael -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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