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isdn: mISDN: correctly handle ph_info allocation failure in hfcsusb_p…
…h_info [ Upstream commit 5265db2 ] Modify return type of hfcusb_ph_info to int, so that we can pass error value up the call stack when allocation of ph_info fails. Also change three of four call sites to actually account for the memory failure. The fourth, in ph_state_nt, is infeasible to change as it is in turn called by ph_state which is used as a function pointer argument to mISDN_initdchannel, which would necessitate changing its signature and updating all the places where it is used (too many). Fixes original flawed commit (38d2265) from the University of Minnesota. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Phillip Potter <phil@philpotter.co.uk> Link: https://lore.kernel.org/r/20210503115736.2104747-48-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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