* [PATCH v2] nfc: port100: fix using -ERRNO as command type mask
@ 2021-10-25 14:49 ` Krzysztof Kozlowski
0 siblings, 0 replies; 4+ messages in thread
From: Krzysztof Kozlowski @ 2021-10-25 14:49 UTC (permalink / raw)
To: Krzysztof Kozlowski, Thierry Escande, linux-nfc, netdev, linux-kernel
Cc: stable
During probing, the driver tries to get a list (mask) of supported
command types in port100_get_command_type_mask() function. The value
is u64 and 0 is treated as invalid mask (no commands supported). The
function however returns also -ERRNO as u64 which will be interpret as
valid command mask.
Return 0 on every error case of port100_get_command_type_mask(), so the
probing will stop.
Cc: <stable@vger.kernel.org>
Fixes: 0347a6ab300a ("NFC: port100: Commands mechanism implementation")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
Changes since v1:
1. Drop debug code.
---
drivers/nfc/port100.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c
index 517376c43b86..16ceb763594f 100644
--- a/drivers/nfc/port100.c
+++ b/drivers/nfc/port100.c
@@ -1006,11 +1006,11 @@ static u64 port100_get_command_type_mask(struct port100 *dev)
skb = port100_alloc_skb(dev, 0);
if (!skb)
- return -ENOMEM;
+ return 0;
resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb);
if (IS_ERR(resp))
- return PTR_ERR(resp);
+ return 0;
if (resp->len < 8)
mask = 0;
--
2.30.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH v2] nfc: port100: fix using -ERRNO as command type mask
@ 2021-10-25 14:49 ` Krzysztof Kozlowski
0 siblings, 0 replies; 4+ messages in thread
From: Krzysztof Kozlowski @ 2021-10-25 14:49 UTC (permalink / raw)
To: linux-nfc
[-- Attachment #1: Type: text/plain, Size: 1235 bytes --]
During probing, the driver tries to get a list (mask) of supported
command types in port100_get_command_type_mask() function. The value
is u64 and 0 is treated as invalid mask (no commands supported). The
function however returns also -ERRNO as u64 which will be interpret as
valid command mask.
Return 0 on every error case of port100_get_command_type_mask(), so the
probing will stop.
Cc: <stable@vger.kernel.org>
Fixes: 0347a6ab300a ("NFC: port100: Commands mechanism implementation")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
Changes since v1:
1. Drop debug code.
---
drivers/nfc/port100.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c
index 517376c43b86..16ceb763594f 100644
--- a/drivers/nfc/port100.c
+++ b/drivers/nfc/port100.c
@@ -1006,11 +1006,11 @@ static u64 port100_get_command_type_mask(struct port100 *dev)
skb = port100_alloc_skb(dev, 0);
if (!skb)
- return -ENOMEM;
+ return 0;
resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb);
if (IS_ERR(resp))
- return PTR_ERR(resp);
+ return 0;
if (resp->len < 8)
mask = 0;
--
2.30.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [linux-nfc] [PATCH v2] nfc: port100: fix using -ERRNO as command type mask
@ 2021-10-25 14:49 ` Krzysztof Kozlowski
0 siblings, 0 replies; 4+ messages in thread
From: Krzysztof Kozlowski @ 2021-10-25 14:49 UTC (permalink / raw)
To: Krzysztof Kozlowski, Thierry Escande, linux-nfc, netdev, linux-kernel
Cc: stable
During probing, the driver tries to get a list (mask) of supported
command types in port100_get_command_type_mask() function. The value
is u64 and 0 is treated as invalid mask (no commands supported). The
function however returns also -ERRNO as u64 which will be interpret as
valid command mask.
Return 0 on every error case of port100_get_command_type_mask(), so the
probing will stop.
Cc: <stable@vger.kernel.org>
Fixes: 0347a6ab300a ("NFC: port100: Commands mechanism implementation")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
Changes since v1:
1. Drop debug code.
---
drivers/nfc/port100.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c
index 517376c43b86..16ceb763594f 100644
--- a/drivers/nfc/port100.c
+++ b/drivers/nfc/port100.c
@@ -1006,11 +1006,11 @@ static u64 port100_get_command_type_mask(struct port100 *dev)
skb = port100_alloc_skb(dev, 0);
if (!skb)
- return -ENOMEM;
+ return 0;
resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb);
if (IS_ERR(resp))
- return PTR_ERR(resp);
+ return 0;
if (resp->len < 8)
mask = 0;
--
2.30.2
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^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] nfc: port100: fix using -ERRNO as command type mask
2021-10-25 14:49 ` [linux-nfc] " Krzysztof Kozlowski
(?)
(?)
@ 2021-10-26 12:50 ` patchwork-bot+netdevbpf
-1 siblings, 0 replies; 4+ messages in thread
From: patchwork-bot+netdevbpf @ 2021-10-26 12:50 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: thierry.escande, linux-nfc, netdev, linux-kernel, stable
Hello:
This patch was applied to netdev/net.git (master)
by David S. Miller <davem@davemloft.net>:
On Mon, 25 Oct 2021 16:49:36 +0200 you wrote:
> During probing, the driver tries to get a list (mask) of supported
> command types in port100_get_command_type_mask() function. The value
> is u64 and 0 is treated as invalid mask (no commands supported). The
> function however returns also -ERRNO as u64 which will be interpret as
> valid command mask.
>
> Return 0 on every error case of port100_get_command_type_mask(), so the
> probing will stop.
>
> [...]
Here is the summary with links:
- [v2] nfc: port100: fix using -ERRNO as command type mask
https://git.kernel.org/netdev/net/c/2195f2062e4c
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
^ permalink raw reply [flat|nested] 4+ messages in thread
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2021-10-25 14:49 [PATCH v2] nfc: port100: fix using -ERRNO as command type mask Krzysztof Kozlowski
2021-10-25 14:49 ` Krzysztof Kozlowski
2021-10-25 14:49 ` [linux-nfc] " Krzysztof Kozlowski
2021-10-26 12:50 ` patchwork-bot+netdevbpf
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