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wangjianyu3 7e53ba18f8 arch/arm/rp2040: fix IN endpoint DPSRAM index for bare-eplog callers 
rp2040_allocep() indexes the endpoint's DPSRAM buffer/control
registers via RP2040_DPINDEX(eplog) and RP2040_EPINDEX(eplog), both
of which take the transfer direction from the direction bit of
'eplog' itself instead of trusting the explicit 'in' argument that
is also passed to this function.

This is harmless for callers that always encode the direction bit
into 'eplog' (e.g. CDC/ACM's CDCACM_MKEPBULKIN()/MKEPINTIN(), which
OR in USB_DIR_IN), since 'in' then always agrees with that bit.  But
drivers/usbdev/usbdev_fs.c (the generic ADB/fastboot class driver)
calls DEV_ALLOCEP() with a bare endpoint number in 'eplog' (no
direction bit) and passes the direction only via the separate 'in'
parameter - matching this function's own "direction bit ignored"
contract for 'eplog' (see its Input Parameters doc, and the
pre-existing "Ignore any direction bits in the logical address"
comment, both dating back to the original driver in b860e3c4ad).
For such a bare-number IN endpoint, USB_ISEPOUT(eplog) always
evaluates true (the IN bit is never set on a plain number), so
RP2040_DPINDEX(eplog) silently pointed the endpoint's buffer/control
registers at its OUT slot instead of its IN slot.  The real IN slot
was left unconfigured, so the SIE responded to every IN token on
that endpoint with a STALL - confirmed on real hardware via usbmon:
'C Bi:1:050:6 -32 0' (EPIPE) on every attempt, while the paired OUT
endpoint (which "accidentally" resolved to the correct slot for the
same reason) worked fine.

Fix: normalize 'eplog' to agree with the explicit 'in' argument
before it is used by RP2040_EPINDEX()/RP2040_DPINDEX(), so both
macros keep their original, single-argument form and every use of
eplog's direction bit below this point is consistent with 'in'.
Existing 0x80-encoded callers (EP0, CDC/ACM) already agree with 'in'
and are unaffected by the normalization.

Also fix two pre-existing nxstyle violations in this same file
(a misaligned comment block under USB_REQ_SYNCHFRAME, and a bare
';' body instead of empty braces on a while loop), both dating back
to the original driver in b860e3c4ad as well; CI runs nxstyle on
the whole file whenever it is touched.

Assisted-by: OpenCode:claude-sonnet-5
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
2026-09-08 08:22:37 -03:00
..
arm arch/arm/rp2040: fix IN endpoint DPSRAM index for bare-eplog callers 2026-09-08 08:22:37 -03:00
arm64 arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
avr arch, boards, cmake: Build C++ ELF modules without __cxa_atexit. 2026-09-04 15:44:24 -03:00
ceva arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
dummy
hc tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
mips arch, boards, cmake: Build C++ ELF modules without __cxa_atexit. 2026-09-04 15:44:24 -03:00
misoc arch, boards, cmake: Build C++ ELF modules without __cxa_atexit. 2026-09-04 15:44:24 -03:00
or1k arch, boards, cmake: Build C++ ELF modules without __cxa_atexit. 2026-09-04 15:44:24 -03:00
renesas nuttx/libc: refine the atomic related Kconfig 2026-08-24 13:20:45 +08:00
risc-v arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
sim arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
sparc arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
tricore arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
x86 arch, boards, cmake: Build C++ ELF modules without __cxa_atexit. 2026-09-04 15:44:24 -03:00
x86_64 arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
xtensa arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00
z16 tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
z80 style: fix checkpatch issues after debug.h move 2026-04-07 07:50:06 -03:00
CMakeLists.txt cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
Kconfig arch/atomic: remove up_testset in spinlock 2026-09-08 08:58:54 +08:00