diff mbox series

[net-next,3/5] net: dsa: realtek: rtl8365mb: correct the max number of ports

Message ID 20220606134553.2919693-4-alvin@pqrs.dk (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: realtek: rtl8365mb: improve handling of PHY modes | expand

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netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
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netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1 this patch: 1
netdev/cc_maintainers success CCed 11 of 11 maintainers
netdev/build_clang success Errors and warnings before: 2 this patch: 2
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1 this patch: 1
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked
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netdev/source_inline success Was 0 now: 0

Commit Message

Alvin Šipraga June 6, 2022, 1:45 p.m. UTC 
From: Alvin Šipraga <alsi@bang-olufsen.dk>

The maximum number of ports is actually 11, according to two
observations:

1. The highest port ID used in the vendor driver is 10. Since port IDs
   are indexed from 0, and since DSA follows the same numbering system,
   this means up to 11 ports are to be presumed.

2. The registers with port mask fields always amount to a maximum port
   mask of 0x7FF, corresponding to a maximum 11 ports.

In view of this, I also deleted the comment.

Signed-off-by: Alvin Šipraga <alsi@bang-olufsen.dk>
---
 drivers/net/dsa/realtek/rtl8365mb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Luiz Angelo Daros de Luca June 7, 2022, 1:17 p.m. UTC | #1 
Em seg., 6 de jun. de 2022 às 10:46, Alvin Šipraga <alvin@pqrs.dk> escreveu:
>
> From: Alvin Šipraga <alsi@bang-olufsen.dk>
>
> The maximum number of ports is actually 11, according to two
> observations:
>
> 1. The highest port ID used in the vendor driver is 10. Since port IDs
>    are indexed from 0, and since DSA follows the same numbering system,
>    this means up to 11 ports are to be presumed.
>
> 2. The registers with port mask fields always amount to a maximum port
>    mask of 0x7FF, corresponding to a maximum 11 ports.
>  /* valid for all 6-port or less variants */

It makes sense for the family. The 10-ports variants have 0-7 user
ports and ext0,1,2 declared in rtl8367c driver, although no model I
know does use ext2.

Reviewed-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
diff mbox series

Patch

diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c
index c64219271a2b..392047558656 100644
--- a/drivers/net/dsa/realtek/rtl8365mb.c
+++ b/drivers/net/dsa/realtek/rtl8365mb.c
@@ -115,8 +115,7 @@ 
 #define RTL8365MB_PHYADDRMAX		7
 #define RTL8365MB_NUM_PHYREGS		32
 #define RTL8365MB_PHYREGMAX		(RTL8365MB_NUM_PHYREGS - 1)
-/* RTL8370MB and RTL8310SR, possibly suportable by this driver, have 10 ports */
-#define RTL8365MB_MAX_NUM_PORTS		10
+#define RTL8365MB_MAX_NUM_PORTS		11
 #define RTL8365MB_LEARN_LIMIT_MAX	2112
 
 /* valid for all 6-port or less variants */