[incubator-nuttx] 02/03: stm32h7:USB otgdev Ensure proper EP state

[antmerlino]

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antmerlino pushed a commit to branch master
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commit e488f0047d20af13b40812b0fdfb3eda847373ed
Author: David Sidrane <david.sidr...@nscdg.com>
AuthorDate: Thu Sep 9 07:13:34 2021 -0700

    stm32h7:USB otgdev Ensure proper EP state
    
       Repeated automated sercon, serdis on VBUS proved to fail
       for CDCACM DATA IN (device Serial TX). The root cause was
       that the EP was left active after disconnect. This resulted
       in the first serial write falling to kick-off the EP IN request.
       That should restart the EP ISR.
---
 arch/arm/src/stm32h7/stm32_otgdev.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/src/stm32h7/stm32_otgdev.c 
b/arch/arm/src/stm32h7/stm32_otgdev.c
index 56c5d8f..44c413e 100644
--- a/arch/arm/src/stm32h7/stm32_otgdev.c
+++ b/arch/arm/src/stm32h7/stm32_otgdev.c
@@ -2080,6 +2080,8 @@ static void stm32_usbreset(struct stm32_usbdev_s *priv)
       /* Reset IN endpoint status */
 
       privep->stalled = false;
+      privep->active  = false;
+      privep->zlp     = false;
 
       /* Return read requests to the class implementation */
 
@@ -2089,6 +2091,8 @@ static void stm32_usbreset(struct stm32_usbdev_s *priv)
       /* Reset endpoint status */
 
       privep->stalled = false;
+      privep->active  = false;
+      privep->zlp     = false;
     }
 
   stm32_putreg(0xffffffff, STM32_OTG_DAINT);
@@ -3959,6 +3963,8 @@ static int stm32_epout_configure(FAR struct stm32_ep_s 
*privep,
       privep->ep.maxpacket = maxpacket;
       privep->eptype       = eptype;
       privep->stalled      = false;
+      privep->active       = false;
+      privep->zlp          = false;
     }
 
   /* Enable the interrupt for this endpoint */
@@ -4030,6 +4036,8 @@ static int stm32_epin_configure(FAR struct stm32_ep_s 
*privep,
       privep->ep.maxpacket = maxpacket;
       privep->eptype       = eptype;
       privep->stalled      = false;
+      privep->active       = false;
+      privep->zlp          = false;
     }
 
   /* Enable the interrupt for this endpoint */