android/android_kernel_xiaomi_sm8450
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i2c: ismt: dump registers at the end of transactions

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This patch dumps general and master registers at the end of transactions
when debugging is enabled. Previously, registers were only dumped before
submitting new descriptors (at the beginning of transactions).

This helps debugging if some registers change as result of a failed
transaction (e.g. bits are set in the ERRSTS general register).

Signed-off-by: Radu Rendec <radu.rendec@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Radu Rendec 2017-08-18 17:01:28 +01:00 committed by Wolfram Sang
parent 6e318d9e37
commit aad550f93f
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/busses/i2c-ismt.c
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@ -324,6 +324,8 @@ static int ismt_process_desc(const struct ismt_desc *desc,
dev_dbg(&priv->pci_dev->dev, "Processing completed descriptor\n");
__ismt_desc_dump(&priv->pci_dev->dev, desc);
ismt_gen_reg_dump(priv);
ismt_mstr_reg_dump(priv);
if (desc->status & ISMT_DESC_SCS) {
if (read_write == I2C_SMBUS_WRITE &&