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| author |   Oded Gabbay <oded.gabbay@gmail.com> | 2019-02-26 11:23:34 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-26 11:35:03 +0100 |
| commit | 4398e7057d66050b4121b97da048bfe3fdaf4c8d (patch) | |
| tree | 87dfea73893e480b56102f03d42335c44a8b49ac /drivers/misc/habanalabs/debugfs.c | |
| parent | habanalabs: driver's Kconfig must select DMA_SHARED_BUFFER (diff) | |
| download | linux-dev-4398e7057d66050b4121b97da048bfe3fdaf4c8d.tar.xz linux-dev-4398e7057d66050b4121b97da048bfe3fdaf4c8d.zip | |
habanalabs: return error when failing to read/write i2c
The driver can't read/write from i2c if the device is in reset or
disabled. Therefore, return -EBUSY in those cases instead of 0.
This change also fixes a smatch warning about uninitialized variable.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/habanalabs/debugfs.c')
| -rw-r--r-- | drivers/misc/habanalabs/debugfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/misc/habanalabs/debugfs.c b/drivers/misc/habanalabs/debugfs.c index a6d9d809385e..f472b572faea 100644 --- a/drivers/misc/habanalabs/debugfs.c +++ b/drivers/misc/habanalabs/debugfs.c @@ -25,7 +25,7 @@ static int hl_debugfs_i2c_read(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr, int rc; if (hl_device_disabled_or_in_reset(hdev)) - return 0; + return -EBUSY; memset(&pkt, 0, sizeof(pkt)); @@ -50,7 +50,7 @@ static int hl_debugfs_i2c_write(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr, int rc; if (hl_device_disabled_or_in_reset(hdev)) - return 0; + return -EBUSY; memset(&pkt, 0, sizeof(pkt)); |