Messages in this thread |  | | From | Kalle Valo <> | Subject | New sparse warning from min_t(): expression using sizeof(void) | Date | Sat, 21 Apr 2018 10:50:51 +0300 |
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Hi Kees&Linus,
after upgrading to v4.17-rc1 I started to see this sparse warning from min_t():
drivers/net/wireless/ath/ath10k/wmi.c:4620:31: warning: expression using sizeof(void)
I counted 167 such warnings just from ath10k alone and Luca told me that he sees similar sparse warnings with iwlwifi as well. My sparse is pretty old (v0.5.0-44-g40791b94c56b) but Luca said updating sparse to 0.5.2 didn't help. I also see this with latest commit from Linus' tree (83beed7b2b26).
After reverting these two commits the sparse warnings go away:
e9092d0d9796 Fix subtle macro variable shadowing in min_not_zero() 3c8ba0d61d04 kernel.h: Retain constant expression output for max()/min()
I had to revert e9092d0d9796 due to conflicts but it seems 3c8ba0d61d04 is the actual commit causing these warnings.
Is there any way to fix it? With ath10k I use sparse a lot and because of these warnings sparse is now very annoying to use.
-- Kalle Valo
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