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firmware: qcom_scm: Permit early SCM calls before driver probe

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In some cases we need to make early SCM calls, i.e., when
the driver has not been probed. Adding NULL dereference
checks to handle such cases.

Change-Id: I4e6e6821795ed5833e59350865a17530494c52f9
Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
This commit is contained in:
Siddharth Gupta 2019-09-11 16:52:53 -07:00 • committed by Elliot Berman
commit ec51a0f5ea
1 changed files with 2 additions and 2 deletions
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4
drivers/firmware/qcom_scm.c
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@ -338,13 +338,13 @@ EXPORT_SYMBOL(qcom_scm_tz_blsp_modify_owner);
int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
{
return __qcom_scm_io_readl(__scm->dev, addr, val);
return __qcom_scm_io_readl(__scm ? __scm->dev : NULL, addr, val);
}
EXPORT_SYMBOL(qcom_scm_io_readl);
int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
{
return __qcom_scm_io_writel(__scm->dev, addr, val);
return __qcom_scm_io_writel(__scm ? __scm->dev : NULL, addr, val);
}
EXPORT_SYMBOL(qcom_scm_io_writel);